chore(i18n,curriculum): update translations (#43746)

curriculum/challenges/chinese-traditional/01-responsive-web-design/responsive-web-design-projects/build-a-product-landing-page.md

@@ -14,7 +14,7 @@ dashedName: build-a-product-landing-page
 
 你可以使用 HTML、JavaScript 以及 CSS 來完成項目。 由於目前你只學到了 CSS 課程，所以我們建議你只使用 CSS 來完成這個項目，同時鞏固一下你之前所學的內容。 你也可以使用 Bootstrap 或者 SASS。 我們不推薦你在這個項目中使用其他技術（比如 jQuery、React、Angular 或 Vue）。 在後續的其他項目中，你將有機會使用像是 React 等其他技術棧。 我們會接受並嘗試修復你在使用推薦技術棧創建項目時報告的問題。 祝你編碼愉快！
 
-**需求 1：** 產品登陸頁應存在 `id="header"` 的 `header` 元素。
+**需求 1：** 產品登錄頁應存在 `id="header"` 的 `header` 元素。
 
 **需求 2：** 在 `header` 元素內應存在 `id="header-img"` 的圖像， 這裏通常用來放置公司的 logo。
 

curriculum/challenges/chinese-traditional/02-javascript-algorithms-and-data-structures/regular-expressions/find-one-or-more-criminals-in-a-hunt.md

@@ -69,12 +69,14 @@ assert(
 你的正則表達式在`""`中不應該匹配到任何罪犯
 
 ```js
+reCriminals.lastIndex = 0;
 assert(!reCriminals.test(''));
 ```
 
 你的正則表達式在`P1P2P3`中不應該匹配到任何罪犯
 
 ```js
+reCriminals.lastIndex = 0;
 assert(!reCriminals.test('P1P2P3'));
 ```
 

curriculum/challenges/chinese-traditional/02-javascript-algorithms-and-data-structures/regular-expressions/ignore-case-while-matching.md

@@ -23,60 +23,70 @@ dashedName: ignore-case-while-matching
 你的正則表達式應該匹配 `freeCodeCamp`
 
 ```js
+fccRegex.lastIndex = 0; 
 assert(fccRegex.test('freeCodeCamp'));
 ```
 
 你的正則表達式應該匹配 `FreeCodeCamp`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(fccRegex.test('FreeCodeCamp'));
 ```
 
 你的正則表達式應該匹配 `FreecodeCamp`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(fccRegex.test('FreecodeCamp'));
 ```
 
 你的正則表達式應該匹配 `FreeCodecamp`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(fccRegex.test('FreeCodecamp'));
 ```
 
 你的正則表達式不應該匹配 `Free Code Camp`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(!fccRegex.test('Free Code Camp'));
 ```
 
 您的正則表達式應該匹配字符串 `FreeCOdeCamp`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(fccRegex.test('FreeCOdeCamp'));
 ```
 
 你的正則表達式不應該匹配 `FCC`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(!fccRegex.test('FCC'));
 ```
 
 你的正則表達式應該匹配字符串 `FrEeCoDeCamp`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(fccRegex.test('FrEeCoDeCamp'));
 ```
 
 你的正則表達式應該匹配字符串 `FrEeCodECamp`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(fccRegex.test('FrEeCodECamp'));
 ```
 
 你的正則表達式應該匹配字符串 `FReeCodeCAmp`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(fccRegex.test('FReeCodeCAmp'));
 ```
 

curriculum/challenges/chinese-traditional/02-javascript-algorithms-and-data-structures/regular-expressions/match-a-literal-string-with-different-possibilities.md

@@ -25,42 +25,49 @@ dashedName: match-a-literal-string-with-different-possibilities
 對於字符串 `John has a pet dog.`，你的正則表達式`petRegex` 應該返回 `true`
 
 ```js
+petRegex.lastIndex = 0;
 assert(petRegex.test('John has a pet dog.'));
 ```
 
 對於字符串 `Emma has a pet rock.`，你的正則表達式 `petRegex` 的應該返回 `false`
 
 ```js
+petRegex.lastIndex = 0;
 assert(!petRegex.test('Emma has a pet rock.'));
 ```
 
 對於字符串 `Emma has a pet bird.`，你的正則表達式 `petRegex` 應該返回 `true`
 
 ```js
+petRegex.lastIndex = 0;
 assert(petRegex.test('Emma has a pet bird.'));
 ```
 
 對於字符串 `Liz has a pet cat.`，你的正則表達式 `petRegex` 應該返回 `true`
 
 ```js
+petRegex.lastIndex = 0;
 assert(petRegex.test('Liz has a pet cat.'));
 ```
 
 對於字符串 `Kara has a pet dolphin.`，你的正則表達式 `petRegex` 應該返回 `false`
 
 ```js
+petRegex.lastIndex = 0;
 assert(!petRegex.test('Kara has a pet dolphin.'));
 ```
 
 對於字符串 `Alice has a pet fish.`，你的正則表達式 `petRegex` 應該返回 `true`。
 
 ```js
+petRegex.lastIndex = 0;
 assert(petRegex.test('Alice has a pet fish.'));
 ```
 
 對於字符串 `Jimmy has a pet computer.`，你的正則表達式 `petRegex` 應該返回 `false`。
 
 ```js
+petRegex.lastIndex = 0;
 assert(!petRegex.test('Jimmy has a pet computer.'));
 ```
 

curriculum/challenges/chinese-traditional/02-javascript-algorithms-and-data-structures/regular-expressions/match-beginning-string-patterns.md

@@ -43,12 +43,14 @@ assert(calRegex.flags == '');
 你的正則表達式應該匹配字符串 `Cal` 的開始位置。
 
 ```js
+calRegex.lastIndex = 0;
 assert(calRegex.test('Cal and Ricky both like racing.'));
 ```
 
 你的正則表達式不應該匹配中間包含 `Cal` 的字符串。
 
 ```js
+calRegex.lastIndex = 0;
 assert(!calRegex.test('Ricky and Cal both like racing.'));
 ```
 

curriculum/challenges/chinese-traditional/02-javascript-algorithms-and-data-structures/regular-expressions/match-ending-string-patterns.md

@@ -43,6 +43,7 @@ assert(lastRegex.flags == '');
 你應該在字符串 `The last car on a train is the caboose` 的末尾匹配 `caboose`。
 
 ```js
+lastRegex.lastIndex = 0;
 assert(lastRegex.test('The last car on a train is the caboose'));
 ```
 

curriculum/challenges/chinese-traditional/02-javascript-algorithms-and-data-structures/regular-expressions/match-literal-strings.md

@@ -38,12 +38,14 @@ wrongRegex.test(testStr);
 你的正則表達式 `waldoRegex` 應該匹配到 `Waldo`。
 
 ```js
+waldoRegex.lastIndex = 0;
 assert(waldoRegex.test(waldoIsHiding));
 ```
 
 你的正則表達式 `waldoRegex` 不應該搜尋其他的任何內容。
 
 ```js
+waldoRegex.lastIndex = 0;
 assert(!waldoRegex.test('Somewhere is hiding in this text.'));
 ```
 

curriculum/challenges/chinese-traditional/02-javascript-algorithms-and-data-structures/regular-expressions/positive-and-negative-lookahead.md

@@ -52,48 +52,56 @@ assert(pwRegex.source.match(/\(\?=.*?\)\(\?=.*?\)/) !== null);
 您的正則表達式不應匹配字符串 `astronaut`
 
 ```js
+pwRegex.lastIndex = 0;
 assert(!pwRegex.test('astronaut'));
 ```
 
 你的正則表達式不應匹配字符串 `banan1`
 
 ```js
+pwRegex.lastIndex = 0;
 assert(!pwRegex.test('banan1'));
 ```
 
 你的正則表達式應該匹配字符串 `bana12`
 
 ```js
+pwRegex.lastIndex = 0;
 assert(pwRegex.test('bana12'));
 ```
 
 你的正則表達式應該匹配字符串 `abc123`
 
 ```js
+pwRegex.lastIndex = 0;
 assert(pwRegex.test('abc123'));
 ```
 
 你的正則表達式不應匹配字符串 `12345`
 
 ```js
+pwRegex.lastIndex = 0;
 assert(!pwRegex.test('12345'));
 ```
 
 你的正則表達式應該匹配字符串 `8pass99`
 
 ```js
+pwRegex.lastIndex = 0;
 assert(pwRegex.test('8pass99'));
 ```
 
 你的正表達式不應匹配字符串 `1a2bcde`
 
 ```js
+pwRegex.lastIndex = 0;
 assert(!pwRegex.test('1a2bcde'));
 ```
 
 你的正則表達式應該匹配字符串 `astr1on11aut`
 
 ```js
+pwRegex.lastIndex = 0;
 assert(pwRegex.test('astr1on11aut'));
 ```
 

curriculum/challenges/chinese-traditional/02-javascript-algorithms-and-data-structures/regular-expressions/restrict-possible-usernames.md

@@ -29,78 +29,91 @@ dashedName: restrict-possible-usernames
 你的正則表達式應該匹配字符串 `JACK`
 
 ```js
+userCheck.lastIndex = 0;
 assert(userCheck.test('JACK'));
 ```
 
 你的正則表達式不應匹配字符串 `J`
 
 ```js
+userCheck.lastIndex = 0;
 assert(!userCheck.test('J'));
 ```
 
 你的正則表達式應該匹配字符串 `Jo`
 
 ```js
+userCheck.lastIndex = 0;
 assert(userCheck.test('Jo'));
 ```
 
 你的正則表達式應該匹配字符串 `Oceans11`
 
 ```js
+userCheck.lastIndex = 0;
 assert(userCheck.test('Oceans11'));
 ```
 
 你的正則表達式應該匹配字符串 `RegexGuru`
 
 ```js
+userCheck.lastIndex = 0;
 assert(userCheck.test('RegexGuru'));
 ```
 
 你的正則表達式不應匹配字符串 `007`
 
 ```js
+userCheck.lastIndex = 0;
 assert(!userCheck.test('007'));
 ```
 
 你的正則表達式不應匹配字符串 `9`
 
 ```js
+userCheck.lastIndex = 0;
 assert(!userCheck.test('9'));
 ```
 
 你的正則表達式不應匹配字符串 `A1`
 
 ```js
+userCheck.lastIndex = 0;
 assert(!userCheck.test('A1'));
 ```
 
 你的正則表達式不應匹配字符串 `BadUs3rnam3`
 
 ```js
+userCheck.lastIndex = 0;
 assert(!userCheck.test('BadUs3rnam3'));
 ```
 
 你的正則表達式應該匹配字符串 `Z97`
 
 ```js
+userCheck.lastIndex = 0;
 assert(userCheck.test('Z97'));
 ```
 
 你的正則表達式不應匹配字符串 `c57bT3`
 
 ```js
+userCheck.lastIndex = 0;
 assert(!userCheck.test('c57bT3'));
 ```
 
 你的正則表達式應該匹配字符串 `AB1`
 
 ```js
+userCheck.lastIndex = 0;
 assert(userCheck.test('AB1'));
 ```
 
 你的正則表達式不應匹配字符串 `J%4`
 
 ```js
+userCheck.lastIndex = 0;
 assert(!userCheck.test('J%4'))
 ```
 

curriculum/challenges/chinese-traditional/02-javascript-algorithms-and-data-structures/regular-expressions/reuse-patterns-using-capture-groups.md

@@ -52,12 +52,14 @@ assert(reRegex.source.match(/\\1|\\2/g).length >= 2);
 你的正則表達式應該匹配字符串 `42 42 42`。
 
 ```js
+reRegex.lastIndex = 0;
 assert(reRegex.test('42 42 42'));
 ```
 
 你的正則表達式應該匹配字符串 `100 100 100`。
 
 ```js
+reRegex.lastIndex = 0;
 assert(reRegex.test('100 100 100'));
 ```
 
@@ -76,18 +78,21 @@ assert.equal('42 42'.match(reRegex.source), null);
 你的正則表達式不應該匹配字符串 `101 102 103`。
 
 ```js
+reRegex.lastIndex = 0;
 assert(!reRegex.test('101 102 103'));
 ```
 
 你的正則表達式不應匹配字符串 `1 2 3`。
 
 ```js
+reRegex.lastIndex = 0;
 assert(!reRegex.test('1 2 3'));
 ```
 
 你的正則表達式不應匹配字符串 `10 10 10`。
 
 ```js
+reRegex.lastIndex = 0;
 assert(reRegex.test('10 10 10'));
 ```
 

curriculum/challenges/chinese-traditional/02-javascript-algorithms-and-data-structures/regular-expressions/specify-only-the-lower-number-of-matches.md

@@ -41,12 +41,14 @@ assert(haRegex.source.match(/{.*?}/).length > 0);
 你的正則表達式不應匹配字符串 `Hazzah`
 
 ```js
+haRegex.lastIndex = 0;
 assert(!haRegex.test('Hazzah'));
 ```
 
 你的正則表達式不應匹配字符串 `Hazzzah`
 
 ```js
+haRegex.lastIndex = 0;
 assert(!haRegex.test('Hazzzah'));
 ```
 

curriculum/challenges/chinese-traditional/02-javascript-algorithms-and-data-structures/regular-expressions/specify-upper-and-lower-number-of-matches.md

@@ -39,6 +39,7 @@ assert(ohRegex.source.match(/{.*?}/).length > 0);
 你的正則表達式不應匹配字符串 `Ohh no`
 
 ```js
+ohRegex.lastIndex = 0;
 assert(!ohRegex.test('Ohh no'));
 ```
 
@@ -69,6 +70,7 @@ assert('Ohhhhhh no'.match(ohRegex)[0].length === 10);
 你的正則表達式應該匹配字符串 `Ohhhhhhh no`
 
 ```js
+ohRegex.lastIndex = 0;
 assert(!ohRegex.test('Ohhhhhhh no'));
 ```
 

curriculum/challenges/chinese/01-responsive-web-design/responsive-web-design-projects/build-a-product-landing-page.md

@@ -14,7 +14,7 @@ dashedName: build-a-product-landing-page
 
 你可以使用 HTML、JavaScript 以及 CSS 来完成项目。 由于目前你只学到了 CSS 课程，所以我们建议你只使用 CSS 来完成这个项目，同时巩固一下你之前所学的内容。 你也可以使用 Bootstrap 或者 SASS。 我们不推荐你在这个项目中使用其他技术（比如 jQuery、React、Angular 或 Vue）。 在后续的其他项目中，你将有机会使用像是 React 等其他技术栈。 我们会接受并尝试修复你在使用推荐技术栈创建项目时报告的问题。 祝你编码愉快！
 
-**需求 1：** 产品登陆页应存在 `id="header"` 的 `header` 元素。
+**需求 1：** 产品登录页应存在 `id="header"` 的 `header` 元素。
 
 **需求 2：** 在 `header` 元素内应存在 `id="header-img"` 的图像， 这里通常用来放置公司的 logo。
 

curriculum/challenges/chinese/02-javascript-algorithms-and-data-structures/regular-expressions/find-one-or-more-criminals-in-a-hunt.md

@@ -69,12 +69,14 @@ assert(
 你的正则表达式在`""`中不应该匹配到任何罪犯
 
 ```js
+reCriminals.lastIndex = 0;
 assert(!reCriminals.test(''));
 ```
 
 你的正则表达式在`P1P2P3`中不应该匹配到任何罪犯
 
 ```js
+reCriminals.lastIndex = 0;
 assert(!reCriminals.test('P1P2P3'));
 ```
 

curriculum/challenges/chinese/02-javascript-algorithms-and-data-structures/regular-expressions/ignore-case-while-matching.md

@@ -23,60 +23,70 @@ dashedName: ignore-case-while-matching
 你的正则表达式应该匹配 `freeCodeCamp`
 
 ```js
+fccRegex.lastIndex = 0; 
 assert(fccRegex.test('freeCodeCamp'));
 ```
 
 你的正则表达式应该匹配 `FreeCodeCamp`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(fccRegex.test('FreeCodeCamp'));
 ```
 
 你的正则表达式应该匹配 `FreecodeCamp`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(fccRegex.test('FreecodeCamp'));
 ```
 
 你的正则表达式应该匹配 `FreeCodecamp`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(fccRegex.test('FreeCodecamp'));
 ```
 
 你的正则表达式不应该匹配 `Free Code Camp`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(!fccRegex.test('Free Code Camp'));
 ```
 
 您的正则表达式应该匹配字符串 `FreeCOdeCamp`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(fccRegex.test('FreeCOdeCamp'));
 ```
 
 你的正则表达式不应该匹配 `FCC`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(!fccRegex.test('FCC'));
 ```
 
 你的正则表达式应该匹配字符串 `FrEeCoDeCamp`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(fccRegex.test('FrEeCoDeCamp'));
 ```
 
 你的正则表达式应该匹配字符串 `FrEeCodECamp`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(fccRegex.test('FrEeCodECamp'));
 ```
 
 你的正则表达式应该匹配字符串 `FReeCodeCAmp`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(fccRegex.test('FReeCodeCAmp'));
 ```
 

curriculum/challenges/chinese/02-javascript-algorithms-and-data-structures/regular-expressions/match-a-literal-string-with-different-possibilities.md

@@ -25,42 +25,49 @@ dashedName: match-a-literal-string-with-different-possibilities
 对于字符串 `John has a pet dog.`，你的正则表达式`petRegex` 应该返回 `true`
 
 ```js
+petRegex.lastIndex = 0;
 assert(petRegex.test('John has a pet dog.'));
 ```
 
 对于字符串 `Emma has a pet rock.`，你的正则表达式 `petRegex` 的应该返回 `false`
 
 ```js
+petRegex.lastIndex = 0;
 assert(!petRegex.test('Emma has a pet rock.'));
 ```
 
 对于字符串 `Emma has a pet bird.`，你的正则表达式 `petRegex` 应该返回 `true`
 
 ```js
+petRegex.lastIndex = 0;
 assert(petRegex.test('Emma has a pet bird.'));
 ```
 
 对于字符串 `Liz has a pet cat.`，你的正则表达式 `petRegex` 应该返回 `true`
 
 ```js
+petRegex.lastIndex = 0;
 assert(petRegex.test('Liz has a pet cat.'));
 ```
 
 对于字符串 `Kara has a pet dolphin.`，你的正则表达式 `petRegex` 应该返回 `false`
 
 ```js
+petRegex.lastIndex = 0;
 assert(!petRegex.test('Kara has a pet dolphin.'));
 ```
 
 对于字符串 `Alice has a pet fish.`，你的正则表达式 `petRegex` 应该返回 `true`。
 
 ```js
+petRegex.lastIndex = 0;
 assert(petRegex.test('Alice has a pet fish.'));
 ```
 
 对于字符串 `Jimmy has a pet computer.`，你的正则表达式 `petRegex` 应该返回 `false`。
 
 ```js
+petRegex.lastIndex = 0;
 assert(!petRegex.test('Jimmy has a pet computer.'));
 ```
 

curriculum/challenges/chinese/02-javascript-algorithms-and-data-structures/regular-expressions/match-beginning-string-patterns.md

@@ -43,12 +43,14 @@ assert(calRegex.flags == '');
 你的正则表达式应该匹配字符串 `Cal` 的开始位置。
 
 ```js
+calRegex.lastIndex = 0;
 assert(calRegex.test('Cal and Ricky both like racing.'));
 ```
 
 你的正则表达式不应该匹配中间包含 `Cal` 的字符串。
 
 ```js
+calRegex.lastIndex = 0;
 assert(!calRegex.test('Ricky and Cal both like racing.'));
 ```
 

curriculum/challenges/chinese/02-javascript-algorithms-and-data-structures/regular-expressions/match-ending-string-patterns.md

@@ -43,6 +43,7 @@ assert(lastRegex.flags == '');
 你应该在字符串 `The last car on a train is the caboose` 的末尾匹配 `caboose`。
 
 ```js
+lastRegex.lastIndex = 0;
 assert(lastRegex.test('The last car on a train is the caboose'));
 ```
 

curriculum/challenges/chinese/02-javascript-algorithms-and-data-structures/regular-expressions/match-literal-strings.md

@@ -38,12 +38,14 @@ wrongRegex.test(testStr);
 你的正则表达式 `waldoRegex` 应该匹配到 `Waldo`。
 
 ```js
+waldoRegex.lastIndex = 0;
 assert(waldoRegex.test(waldoIsHiding));
 ```
 
 你的正则表达式 `waldoRegex` 不应该搜寻其他的任何内容。
 
 ```js
+waldoRegex.lastIndex = 0;
 assert(!waldoRegex.test('Somewhere is hiding in this text.'));
 ```
 

curriculum/challenges/chinese/02-javascript-algorithms-and-data-structures/regular-expressions/positive-and-negative-lookahead.md

@@ -52,48 +52,56 @@ assert(pwRegex.source.match(/\(\?=.*?\)\(\?=.*?\)/) !== null);
 您的正则表达式不应匹配字符串 `astronaut`
 
 ```js
+pwRegex.lastIndex = 0;
 assert(!pwRegex.test('astronaut'));
 ```
 
 你的正则表达式不应匹配字符串 `banan1`
 
 ```js
+pwRegex.lastIndex = 0;
 assert(!pwRegex.test('banan1'));
 ```
 
 你的正则表达式应该匹配字符串 `bana12`
 
 ```js
+pwRegex.lastIndex = 0;
 assert(pwRegex.test('bana12'));
 ```
 
 你的正则表达式应该匹配字符串 `abc123`
 
 ```js
+pwRegex.lastIndex = 0;
 assert(pwRegex.test('abc123'));
 ```
 
 你的正则表达式不应匹配字符串 `12345`
 
 ```js
+pwRegex.lastIndex = 0;
 assert(!pwRegex.test('12345'));
 ```
 
 你的正则表达式应该匹配字符串 `8pass99`
 
 ```js
+pwRegex.lastIndex = 0;
 assert(pwRegex.test('8pass99'));
 ```
 
 你的正表达式不应匹配字符串 `1a2bcde`
 
 ```js
+pwRegex.lastIndex = 0;
 assert(!pwRegex.test('1a2bcde'));
 ```
 
 你的正则表达式应该匹配字符串 `astr1on11aut`
 
 ```js
+pwRegex.lastIndex = 0;
 assert(pwRegex.test('astr1on11aut'));
 ```
 

curriculum/challenges/chinese/02-javascript-algorithms-and-data-structures/regular-expressions/restrict-possible-usernames.md

@@ -29,78 +29,91 @@ dashedName: restrict-possible-usernames
 你的正则表达式应该匹配字符串 `JACK`
 
 ```js
+userCheck.lastIndex = 0;
 assert(userCheck.test('JACK'));
 ```
 
 你的正则表达式不应匹配字符串 `J`
 
 ```js
+userCheck.lastIndex = 0;
 assert(!userCheck.test('J'));
 ```
 
 你的正则表达式应该匹配字符串 `Jo`
 
 ```js
+userCheck.lastIndex = 0;
 assert(userCheck.test('Jo'));
 ```
 
 你的正则表达式应该匹配字符串 `Oceans11`
 
 ```js
+userCheck.lastIndex = 0;
 assert(userCheck.test('Oceans11'));
 ```
 
 你的正则表达式应该匹配字符串 `RegexGuru`
 
 ```js
+userCheck.lastIndex = 0;
 assert(userCheck.test('RegexGuru'));
 ```
 
 你的正则表达式不应匹配字符串 `007`
 
 ```js
+userCheck.lastIndex = 0;
 assert(!userCheck.test('007'));
 ```
 
 你的正则表达式不应匹配字符串 `9`
 
 ```js
+userCheck.lastIndex = 0;
 assert(!userCheck.test('9'));
 ```
 
 你的正则表达式不应匹配字符串 `A1`
 
 ```js
+userCheck.lastIndex = 0;
 assert(!userCheck.test('A1'));
 ```
 
 你的正则表达式不应匹配字符串 `BadUs3rnam3`
 
 ```js
+userCheck.lastIndex = 0;
 assert(!userCheck.test('BadUs3rnam3'));
 ```
 
 你的正则表达式应该匹配字符串 `Z97`
 
 ```js
+userCheck.lastIndex = 0;
 assert(userCheck.test('Z97'));
 ```
 
 你的正则表达式不应匹配字符串 `c57bT3`
 
 ```js
+userCheck.lastIndex = 0;
 assert(!userCheck.test('c57bT3'));
 ```
 
 你的正则表达式应该匹配字符串 `AB1`
 
 ```js
+userCheck.lastIndex = 0;
 assert(userCheck.test('AB1'));
 ```
 
 你的正则表达式不应匹配字符串 `J%4`
 
 ```js
+userCheck.lastIndex = 0;
 assert(!userCheck.test('J%4'))
 ```
 

curriculum/challenges/chinese/02-javascript-algorithms-and-data-structures/regular-expressions/reuse-patterns-using-capture-groups.md

@@ -52,12 +52,14 @@ assert(reRegex.source.match(/\\1|\\2/g).length >= 2);
 你的正则表达式应该匹配字符串 `42 42 42`。
 
 ```js
+reRegex.lastIndex = 0;
 assert(reRegex.test('42 42 42'));
 ```
 
 你的正则表达式应该匹配字符串 `100 100 100`。
 
 ```js
+reRegex.lastIndex = 0;
 assert(reRegex.test('100 100 100'));
 ```
 
@@ -76,18 +78,21 @@ assert.equal('42 42'.match(reRegex.source), null);
 你的正则表达式不应该匹配字符串 `101 102 103`。
 
 ```js
+reRegex.lastIndex = 0;
 assert(!reRegex.test('101 102 103'));
 ```
 
 你的正则表达式不应匹配字符串 `1 2 3`。
 
 ```js
+reRegex.lastIndex = 0;
 assert(!reRegex.test('1 2 3'));
 ```
 
 你的正则表达式不应匹配字符串 `10 10 10`。
 
 ```js
+reRegex.lastIndex = 0;
 assert(reRegex.test('10 10 10'));
 ```
 

curriculum/challenges/chinese/02-javascript-algorithms-and-data-structures/regular-expressions/specify-only-the-lower-number-of-matches.md

@@ -41,12 +41,14 @@ assert(haRegex.source.match(/{.*?}/).length > 0);
 你的正则表达式不应匹配字符串 `Hazzah`
 
 ```js
+haRegex.lastIndex = 0;
 assert(!haRegex.test('Hazzah'));
 ```
 
 你的正则表达式不应匹配字符串 `Hazzzah`
 
 ```js
+haRegex.lastIndex = 0;
 assert(!haRegex.test('Hazzzah'));
 ```
 

curriculum/challenges/chinese/02-javascript-algorithms-and-data-structures/regular-expressions/specify-upper-and-lower-number-of-matches.md

@@ -39,6 +39,7 @@ assert(ohRegex.source.match(/{.*?}/).length > 0);
 你的正则表达式不应匹配字符串 `Ohh no`
 
 ```js
+ohRegex.lastIndex = 0;
 assert(!ohRegex.test('Ohh no'));
 ```
 
@@ -69,6 +70,7 @@ assert('Ohhhhhh no'.match(ohRegex)[0].length === 10);
 你的正则表达式应该匹配字符串 `Ohhhhhhh no`
 
 ```js
+ohRegex.lastIndex = 0;
 assert(!ohRegex.test('Ohhhhhhh no'));
 ```
 

curriculum/challenges/espanol/02-javascript-algorithms-and-data-structures/regular-expressions/find-one-or-more-criminals-in-a-hunt.md

@@ -69,12 +69,14 @@ assert(
 Tu expresión regular no debe coincidir con ningún criminal en la cadena vacía `""`
 
 ```js
+reCriminals.lastIndex = 0;
 assert(!reCriminals.test(''));
 ```
 
 Tu regex no debe coincidir con ningún criminal en la cadena `P1P2P3`
 
 ```js
+reCriminals.lastIndex = 0;
 assert(!reCriminals.test('P1P2P3'));
 ```
 

curriculum/challenges/espanol/02-javascript-algorithms-and-data-structures/regular-expressions/ignore-case-while-matching.md

@@ -23,60 +23,70 @@ Escribe una expresión regular `fccRegex` para que coincida con `freeCodeCamp` s
 Tu expresión regular debe coincidir con la cadena `freeCodeCamp`
 
 ```js
+fccRegex.lastIndex = 0; 
 assert(fccRegex.test('freeCodeCamp'));
 ```
 
 Tu expresión regular debe coincidir con la cadena `FreeCodeCamp`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(fccRegex.test('FreeCodeCamp'));
 ```
 
 Tu expresión regular debe coincidir con la cadena `FreecodeCamp`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(fccRegex.test('FreecodeCamp'));
 ```
 
 Tu expresión regular debe coincidir con la cadena `FreeCodecamp`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(fccRegex.test('FreeCodecamp'));
 ```
 
 Tu expresión regular no debe coincidir con la cadena `Free Code Camp`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(!fccRegex.test('Free Code Camp'));
 ```
 
 Tu expresión regular debe coincidir con la cadena `FreeCOdeCamp`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(fccRegex.test('FreeCOdeCamp'));
 ```
 
 Tu expresión regular no debe coincidir con la cadena `FCC`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(!fccRegex.test('FCC'));
 ```
 
 Tu expresión regular debe coincidir con la cadena `FrEeCoDeCamp`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(fccRegex.test('FrEeCoDeCamp'));
 ```
 
 Tu expresión regular debe coincidir con la cadena `FrEeCodECamp`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(fccRegex.test('FrEeCodECamp'));
 ```
 
 Tu expresión regular debe coincidir con la cadena `FReeCodeCAmp`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(fccRegex.test('FReeCodeCAmp'));
 ```
 

curriculum/challenges/espanol/02-javascript-algorithms-and-data-structures/regular-expressions/match-a-literal-string-with-different-possibilities.md

@@ -25,42 +25,49 @@ Completa la expresión regular `petRegex` para que coincida con las mascotas `do
 Tu expresión regular `petRegex` debe devolver `true` para la cadena `John has a pet dog.`
 
 ```js
+petRegex.lastIndex = 0;
 assert(petRegex.test('John has a pet dog.'));
 ```
 
 Tu expresión regular `petRegex` debe devolver `false` para la cadena `Emma has a pet rock.`
 
 ```js
+petRegex.lastIndex = 0;
 assert(!petRegex.test('Emma has a pet rock.'));
 ```
 
 Tu expresión regular `petRegex` debe devolver `true` para la cadena `Emma has a pet bird.`
 
 ```js
+petRegex.lastIndex = 0;
 assert(petRegex.test('Emma has a pet bird.'));
 ```
 
 Tu expresión regular `petRegex` debe devolver `true` para la cadena `Liz has a pet cat.`
 
 ```js
+petRegex.lastIndex = 0;
 assert(petRegex.test('Liz has a pet cat.'));
 ```
 
 Tu expresión regular `petRegex` debe devolver `false` para la cadena `Kara has a pet dolphin.`
 
 ```js
+petRegex.lastIndex = 0;
 assert(!petRegex.test('Kara has a pet dolphin.'));
 ```
 
 Tu expresión regular `petRegex` debe devolver `true` para la cadena `Alice has a pet fish.`
 
 ```js
+petRegex.lastIndex = 0;
 assert(petRegex.test('Alice has a pet fish.'));
 ```
 
 Tu expresión regular `petRegex` debe devolver `false` para la cadena `Jimmy has a pet computer.`
 
 ```js
+petRegex.lastIndex = 0;
 assert(!petRegex.test('Jimmy has a pet computer.'));
 ```
 

curriculum/challenges/espanol/02-javascript-algorithms-and-data-structures/regular-expressions/match-beginning-string-patterns.md

@@ -43,12 +43,14 @@ assert(calRegex.flags == '');
 Tu expresión regular debe coincidir con la cadena `Cal` en el inicio de la cadena.
 
 ```js
+calRegex.lastIndex = 0;
 assert(calRegex.test('Cal and Ricky both like racing.'));
 ```
 
 Tu expresión regular debe coincidir con la cadena `Cal` en medio de la cadena.
 
 ```js
+calRegex.lastIndex = 0;
 assert(!calRegex.test('Ricky and Cal both like racing.'));
 ```
 

curriculum/challenges/espanol/02-javascript-algorithms-and-data-structures/regular-expressions/match-ending-string-patterns.md

@@ -43,6 +43,7 @@ assert(lastRegex.flags == '');
 Debes coincidir `caboose` al final de la cadena `The last car on a train is the caboose`
 
 ```js
+lastRegex.lastIndex = 0;
 assert(lastRegex.test('The last car on a train is the caboose'));
 ```
 

curriculum/challenges/espanol/02-javascript-algorithms-and-data-structures/regular-expressions/match-literal-strings.md

@@ -38,12 +38,14 @@ Completa la expresión regular `waldoRegex` para encontrar `"Waldo"` en la caden
 Tu expresión regular `waldoRegex` debe encontrar la cadena `Waldo`
 
 ```js
+waldoRegex.lastIndex = 0;
 assert(waldoRegex.test(waldoIsHiding));
 ```
 
 Tu expresión regular `waldoRegex` no debe buscar ninguna otra cosa.
 
 ```js
+waldoRegex.lastIndex = 0;
 assert(!waldoRegex.test('Somewhere is hiding in this text.'));
 ```
 

curriculum/challenges/espanol/02-javascript-algorithms-and-data-structures/regular-expressions/positive-and-negative-lookahead.md

@@ -52,48 +52,56 @@ assert(pwRegex.source.match(/\(\?=.*?\)\(\?=.*?\)/) !== null);
 Tu expresión regular no debe coincidir con la cadena `astronaut`
 
 ```js
+pwRegex.lastIndex = 0;
 assert(!pwRegex.test('astronaut'));
 ```
 
 Tu expresión regular no debe coincidir con la cadena `banan1`
 
 ```js
+pwRegex.lastIndex = 0;
 assert(!pwRegex.test('banan1'));
 ```
 
 Tu expresión regular debe coincidir con la cadena `bana12`
 
 ```js
+pwRegex.lastIndex = 0;
 assert(pwRegex.test('bana12'));
 ```
 
 Tu expresión regular debe coincidir con la cadena `abc123`
 
 ```js
+pwRegex.lastIndex = 0;
 assert(pwRegex.test('abc123'));
 ```
 
 Tu expresión regular no debe coincidir con la cadena `12345`
 
 ```js
+pwRegex.lastIndex = 0;
 assert(!pwRegex.test('12345'));
 ```
 
 Tu expresión regular debe coincidir con la cadena `8pass99`
 
 ```js
+pwRegex.lastIndex = 0;
 assert(pwRegex.test('8pass99'));
 ```
 
 Tu expresión regular no debe coincidir con la cadena `1a2bcde`
 
 ```js
+pwRegex.lastIndex = 0;
 assert(!pwRegex.test('1a2bcde'));
 ```
 
 Tu expresión regular debe coincidir con la cadena `astr1on11aut`
 
 ```js
+pwRegex.lastIndex = 0;
 assert(pwRegex.test('astr1on11aut'));
 ```
 

curriculum/challenges/espanol/02-javascript-algorithms-and-data-structures/regular-expressions/restrict-possible-usernames.md

@@ -29,78 +29,91 @@ Cambia la expresión regular `userCheck` para que se ajuste a las restricciones
 Tu expresión regular debe coincidir con la cadena `JACK`
 
 ```js
+userCheck.lastIndex = 0;
 assert(userCheck.test('JACK'));
 ```
 
 Tu expresión regular no debe coincidir con la cadena `J`
 
 ```js
+userCheck.lastIndex = 0;
 assert(!userCheck.test('J'));
 ```
 
 Tu expresión regular debe coincidir con la cadena `Jo`
 
 ```js
+userCheck.lastIndex = 0;
 assert(userCheck.test('Jo'));
 ```
 
 Tu expresión regular debe coincidir con la cadena `Oceans11`
 
 ```js
+userCheck.lastIndex = 0;
 assert(userCheck.test('Oceans11'));
 ```
 
 Tu expresión regular debe coincidir con la cadena `RegexGuru`
 
 ```js
+userCheck.lastIndex = 0;
 assert(userCheck.test('RegexGuru'));
 ```
 
 Tu expresión regular no debe coincidir con la cadena `007`
 
 ```js
+userCheck.lastIndex = 0;
 assert(!userCheck.test('007'));
 ```
 
 Tu expresión regular no debe coincidir con la cadena `9`
 
 ```js
+userCheck.lastIndex = 0;
 assert(!userCheck.test('9'));
 ```
 
 Tu expresión regular no debe coincidir con la cadena `A1`
 
 ```js
+userCheck.lastIndex = 0;
 assert(!userCheck.test('A1'));
 ```
 
 Tu expresión regular no debe coincidir con la cadena `BadUs3rnam3`
 
 ```js
+userCheck.lastIndex = 0;
 assert(!userCheck.test('BadUs3rnam3'));
 ```
 
 Tu expresión regular debe coincidir con la cadena `Z97`
 
 ```js
+userCheck.lastIndex = 0;
 assert(userCheck.test('Z97'));
 ```
 
 Tu expresión regular no debe coincidir con la cadena `c57bT3`
 
 ```js
+userCheck.lastIndex = 0;
 assert(!userCheck.test('c57bT3'));
 ```
 
 Tu expresión regular debe coincidir con la cadena `AB1`
 
 ```js
+userCheck.lastIndex = 0;
 assert(userCheck.test('AB1'));
 ```
 
 Tu expresión regular no debe coincidir con la cadena `J%4`
 
 ```js
+userCheck.lastIndex = 0;
 assert(!userCheck.test('J%4'))
 ```
 

curriculum/challenges/espanol/02-javascript-algorithms-and-data-structures/regular-expressions/reuse-patterns-using-capture-groups.md

@@ -52,12 +52,14 @@ assert(reRegex.source.match(/\\1|\\2/g).length >= 2);
 Tu expresión regular debe coincidir con la cadena `42 42 42`.
 
 ```js
+reRegex.lastIndex = 0;
 assert(reRegex.test('42 42 42'));
 ```
 
 Tu expresión regular debe coincidir con la cadena `100 100 100`.
 
 ```js
+reRegex.lastIndex = 0;
 assert(reRegex.test('100 100 100'));
 ```
 
@@ -76,18 +78,21 @@ assert.equal('42 42'.match(reRegex.source), null);
 Tu expresión regular no debe coincidir con la cadena `101 102 103`.
 
 ```js
+reRegex.lastIndex = 0;
 assert(!reRegex.test('101 102 103'));
 ```
 
 Tu expresión regular no debe coincidir con la cadena `1 2 3`.
 
 ```js
+reRegex.lastIndex = 0;
 assert(!reRegex.test('1 2 3'));
 ```
 
 Tu expresión regular debe coincidir con la cadena `10 10 10`.
 
 ```js
+reRegex.lastIndex = 0;
 assert(reRegex.test('10 10 10'));
 ```
 

curriculum/challenges/espanol/02-javascript-algorithms-and-data-structures/regular-expressions/specify-only-the-lower-number-of-matches.md

@@ -41,12 +41,14 @@ assert(haRegex.source.match(/{.*?}/).length > 0);
 La expresión regular no debe coincidir con la cadena `Hazzah`
 
 ```js
+haRegex.lastIndex = 0;
 assert(!haRegex.test('Hazzah'));
 ```
 
 La expresión regular no debe coincidir con la cadena `Hazzzah`
 
 ```js
+haRegex.lastIndex = 0;
 assert(!haRegex.test('Hazzzah'));
 ```
 

curriculum/challenges/espanol/02-javascript-algorithms-and-data-structures/regular-expressions/specify-upper-and-lower-number-of-matches.md

@@ -39,6 +39,7 @@ assert(ohRegex.source.match(/{.*?}/).length > 0);
 La expresión regular no debe coincidir con la cadena `Ohh no`
 
 ```js
+ohRegex.lastIndex = 0;
 assert(!ohRegex.test('Ohh no'));
 ```
 
@@ -69,6 +70,7 @@ assert('Ohhhhhh no'.match(ohRegex)[0].length === 10);
 La expresión regular no debe coincidir con la cadena `Ohhhhhhh no`
 
 ```js
+ohRegex.lastIndex = 0;
 assert(!ohRegex.test('Ohhhhhhh no'));
 ```
 

curriculum/challenges/espanol/04-data-visualization/data-visualization-with-d3/display-shapes-with-svg.md

@@ -1,6 +1,6 @@
 ---
 id: 587d7fa8367417b2b2512bcc
-title: Display Shapes with SVG
+title: Mostrar formas con SVG
 challengeType: 6
 forumTopicId: 301485
 dashedName: display-shapes-with-svg
@@ -8,47 +8,47 @@ dashedName: display-shapes-with-svg
 
 # --description--
 
-The last challenge created an `svg` element with a given width and height, which was visible because it had a `background-color` applied to it in the `style` tag. The code made space for the given width and height.
+El desafío anterior creó un elemento `svg` con un ancho y alto determinado, el cual era visible porque tenía un `background-color` aplicado a él en la etiqueta `style`. El código dejó espacio para el ancho y la altura dados.
 
-The next step is to create a shape to put in the `svg` area. There are a number of supported shapes in SVG, such as rectangles and circles. They are used to display data. For example, a rectangle (`<rect>`) SVG shape could create a bar in a bar chart.
+El siguiente paso es crear una forma para poner en el área `svg`. Hay una serie de formas compatibles en SVG, como rectángulos y círculos. Se utilizan para mostrar datos. Por ejemplo, una forma SVG rectangular (`<rect>`) podría crear una barra en un gráfico de barras.
 
-When you place a shape into the `svg` area, you can specify where it goes with `x` and `y` coordinates. The origin point of (0, 0) is in the upper-left corner. Positive values for `x` push the shape to the right, and positive values for `y` push the shape down from the origin point.
+Cuando colocas una forma en el área del `svg`, puedes especificar a donde va a ir con las coordenadas `x` asimismo `y`. El punto de origen (0, 0) está en la esquina superior izquierda. Los valores positivos de `x` empujan la forma a la derecha y los valores positivos para `y` empujan la forma hacia abajo desde el punto de origen.
 
-To place a shape in the middle of the 500 (width) x 100 (height) `svg` from last challenge, the `x` coordinate would be 250 and the `y` coordinate would be 50.
+Para colocar una forma en medio del `svg` de 500 (ancho) x 100 (altura) del último reto, la coordenada `x` sería 250 y la coordenada `y` sería 50.
 
-An SVG `rect` has four attributes. There are the `x` and `y` coordinates for where it is placed in the `svg` area. It also has a `height` and `width` to specify the size.
+Un rectángulo(`rect`) de SVG tiene cuatro atributos. Hay coordenadas `x` asimismo `y` para posicionarlo en el área del `svg`. También tiene un `height` (altura) y `width` (ancho) para especificar el tamaño.
 
 # --instructions--
 
-Add a `rect` shape to the `svg` using `append()`, and give it a `width` attribute of `25` and `height` attribute of `100`. Also, give the `rect` `x` and `y` attributes each set to `0`.
+Añade una forma `rect` al `svg` usando `append()`, y dale un atributo `width` de `25` y un atributo `height` de `100`. Además, dale a `rect`, atributos `x` asimismo `y`, establece ambos valores en `0`.
 
 # --hints--
 
-Your document should have 1 `rect` element.
+Tu documento debe tener un elemento `rect`.
 
 ```js
 assert($('rect').length == 1);
 ```
 
-The `rect` element should have a `width` attribute set to `25`.
+El elemento `rect` debe tener un atributo `width` de `25`.
 
 ```js
 assert($('rect').attr('width') == '25');
 ```
 
-The `rect` element should have a `height` attribute set to `100`.
+El elemento `rect` debe tener un atributo `height` de `100`.
 
 ```js
 assert($('rect').attr('height') == '100');
 ```
 
-The `rect` element should have an `x` attribute set to `0`.
+El elemento `rect` debe tener un atributo `x` de `0`.
 
 ```js
 assert($('rect').attr('x') == '0');
 ```
 
-The `rect` element should have a `y` attribute set to `0`.
+El elemento `rect` debe tener un atributo `y` de `0`.
 
 ```js
 assert($('rect').attr('y') == '0');

curriculum/challenges/italian/02-javascript-algorithms-and-data-structures/regular-expressions/find-one-or-more-criminals-in-a-hunt.md

@@ -69,12 +69,14 @@ assert(
 La tua espressione regolare non dovrebbe riconoscere nessun criminale nella stringa vuota `""`
 
 ```js
+reCriminals.lastIndex = 0;
 assert(!reCriminals.test(''));
 ```
 
 La tua espressione regolare non dovrebbe riconoscere nessun criminale nella stringa `P1P2P3`
 
 ```js
+reCriminals.lastIndex = 0;
 assert(!reCriminals.test('P1P2P3'));
 ```
 

curriculum/challenges/italian/02-javascript-algorithms-and-data-structures/regular-expressions/ignore-case-while-matching.md

@@ -23,60 +23,70 @@ Scrivi un'espressione regolare `fccRegex` per riconoscere `freeCodeCamp`, indipe
 La tua espressione regolare dovrebbe riconoscere la stringa `freeCodeCamp`
 
 ```js
+fccRegex.lastIndex = 0; 
 assert(fccRegex.test('freeCodeCamp'));
 ```
 
 La tua espressione regolare dovrebbe riconoscere la stringa `FreeCodeCamp`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(fccRegex.test('FreeCodeCamp'));
 ```
 
 La tua espressione regolare dovrebbe riconoscere la stringa `FreecodeCamp`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(fccRegex.test('FreecodeCamp'));
 ```
 
 La tua espressione regolare dovrebbe riconoscere la stringa `FreeCodecamp`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(fccRegex.test('FreeCodecamp'));
 ```
 
 La tua espressione regolare non dovrebbe riconoscere la stringa `Free Code Camp`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(!fccRegex.test('Free Code Camp'));
 ```
 
 La tua espressione regolare dovrebbe riconoscere la stringa `FreeCOdeCamp`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(fccRegex.test('FreeCOdeCamp'));
 ```
 
 La tua espressione regolare non dovrebbe riconoscere la stringa `FCC`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(!fccRegex.test('FCC'));
 ```
 
 La tua espressione regolare dovrebbe riconoscere la stringa `FrEeCoDeCamp`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(fccRegex.test('FrEeCoDeCamp'));
 ```
 
 La tua espressione regolare dovrebbe riconoscere la stringa `FrEeCodECamp`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(fccRegex.test('FrEeCodECamp'));
 ```
 
 La tua espressione regolare dovrebbe riconoscere la stringa `FReeCodeCAmp`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(fccRegex.test('FReeCodeCAmp'));
 ```
 

curriculum/challenges/italian/02-javascript-algorithms-and-data-structures/regular-expressions/match-a-literal-string-with-different-possibilities.md

@@ -25,42 +25,49 @@ Completa l'espressione regolare `petRegex` per riconoscere gli animali domestici
 La tua espressione regolare `petRegex` dovrebbe restituire `true` per la stringa `John has a pet dog.`
 
 ```js
+petRegex.lastIndex = 0;
 assert(petRegex.test('John has a pet dog.'));
 ```
 
 La tua espressione regolare `petRegex` dovrebbe restituire `false` per la stringa `Emma has a pet rock.`
 
 ```js
+petRegex.lastIndex = 0;
 assert(!petRegex.test('Emma has a pet rock.'));
 ```
 
 La tua espressione regolare `petRegex` dovrebbe restituire `true` per la stringa `Emma has a pet bird.`
 
 ```js
+petRegex.lastIndex = 0;
 assert(petRegex.test('Emma has a pet bird.'));
 ```
 
 La tua espressione regolare `petRegex` dovrebbe restituire `true` per la stringa `Liz has a pet cat.`
 
 ```js
+petRegex.lastIndex = 0;
 assert(petRegex.test('Liz has a pet cat.'));
 ```
 
 La tua espressione regolare `petRegex` dovrebbe restituire `false` per la stringa `Kara has a pet dolphin.`
 
 ```js
+petRegex.lastIndex = 0;
 assert(!petRegex.test('Kara has a pet dolphin.'));
 ```
 
 La tua espressione regolare `petRegex` dovrebbe restituire `true` per la stringa `Alice has a pet fish.`
 
 ```js
+petRegex.lastIndex = 0;
 assert(petRegex.test('Alice has a pet fish.'));
 ```
 
 La tua espressione regolare `petRegex` dovrebbe restituire `false` per la stringa `Jimmy has a pet computer.`
 
 ```js
+petRegex.lastIndex = 0;
 assert(!petRegex.test('Jimmy has a pet computer.'));
 ```
 

curriculum/challenges/italian/02-javascript-algorithms-and-data-structures/regular-expressions/match-beginning-string-patterns.md

@@ -43,12 +43,14 @@ assert(calRegex.flags == '');
 La tua espressione regolare dovrebbe riconoscere `Cal` all'inizio della stringa.
 
 ```js
+calRegex.lastIndex = 0;
 assert(calRegex.test('Cal and Ricky both like racing.'));
 ```
 
 La tua espressione regolare non dovrebbe riconoscere `Cal` nel mezzo di una stringa.
 
 ```js
+calRegex.lastIndex = 0;
 assert(!calRegex.test('Ricky and Cal both like racing.'));
 ```
 

curriculum/challenges/italian/02-javascript-algorithms-and-data-structures/regular-expressions/match-ending-string-patterns.md

@@ -43,6 +43,7 @@ assert(lastRegex.flags == '');
 Dovresti riconoscere `caboose` alla fine della stringa `The last car on a train is the caboose`
 
 ```js
+lastRegex.lastIndex = 0;
 assert(lastRegex.test('The last car on a train is the caboose'));
 ```
 

curriculum/challenges/italian/02-javascript-algorithms-and-data-structures/regular-expressions/match-literal-strings.md

@@ -38,12 +38,14 @@ Completa l'espressione regolare `waldoRegex` per trovare `"Waldo"` nella stringa
 La tua espressione regolare `waldoRegex` dovrebbe trovare la stringa `Waldo`
 
 ```js
+waldoRegex.lastIndex = 0;
 assert(waldoRegex.test(waldoIsHiding));
 ```
 
 La tua espressione regolare `waldoRegex` non dovrebbe cercare altro.
 
 ```js
+waldoRegex.lastIndex = 0;
 assert(!waldoRegex.test('Somewhere is hiding in this text.'));
 ```
 

curriculum/challenges/italian/02-javascript-algorithms-and-data-structures/regular-expressions/positive-and-negative-lookahead.md

@@ -52,48 +52,56 @@ assert(pwRegex.source.match(/\(\?=.*?\)\(\?=.*?\)/) !== null);
 La tua espressione regolare non dovrebbe corrispondere alla stringa `astronaut`
 
 ```js
+pwRegex.lastIndex = 0;
 assert(!pwRegex.test('astronaut'));
 ```
 
 La tua espressione regolare non dovrebbe riconoscere la stringa `banan1`
 
 ```js
+pwRegex.lastIndex = 0;
 assert(!pwRegex.test('banan1'));
 ```
 
 La tua espressione regolare dovrebbe riconoscere la stringa `bana12`
 
 ```js
+pwRegex.lastIndex = 0;
 assert(pwRegex.test('bana12'));
 ```
 
 La tua espressione regolare dovrebbe riconoscere la stringa `abc123`
 
 ```js
+pwRegex.lastIndex = 0;
 assert(pwRegex.test('abc123'));
 ```
 
 La tua espressione regolare non dovrebbe riconoscere la stringa `12345`
 
 ```js
+pwRegex.lastIndex = 0;
 assert(!pwRegex.test('12345'));
 ```
 
 La tua espressione regolare dovrebbe riconoscere la stringa `8pass99`
 
 ```js
+pwRegex.lastIndex = 0;
 assert(pwRegex.test('8pass99'));
 ```
 
 La tua espressione regolare non dovrebbe riconoscere la stringa `1a2bcde`
 
 ```js
+pwRegex.lastIndex = 0;
 assert(!pwRegex.test('1a2bcde'));
 ```
 
 La tua espressione regolare dovrebbe riconoscere la stringa `astr1on11aut`
 
 ```js
+pwRegex.lastIndex = 0;
 assert(pwRegex.test('astr1on11aut'));
 ```
 

curriculum/challenges/italian/02-javascript-algorithms-and-data-structures/regular-expressions/restrict-possible-usernames.md

@@ -29,78 +29,91 @@ Cambia l'espressione regolare `userCheck` in modo che corrisponda ai vincoli ele
 La tua espressione regolare dovrebbe riconoscere la stringa `JACK`
 
 ```js
+userCheck.lastIndex = 0;
 assert(userCheck.test('JACK'));
 ```
 
 La tua espressione regolare non dovrebbe riconoscere la stringa `J`
 
 ```js
+userCheck.lastIndex = 0;
 assert(!userCheck.test('J'));
 ```
 
 La tua espressione regolare dovrebbe riconoscere la stringa `Jo`
 
 ```js
+userCheck.lastIndex = 0;
 assert(userCheck.test('Jo'));
 ```
 
 La tua espressione regolare dovrebbe riconoscere la stringa `Oceans11`
 
 ```js
+userCheck.lastIndex = 0;
 assert(userCheck.test('Oceans11'));
 ```
 
 La tua espressione regolare dovrebbe riconoscere la stringa `RegexGuru`
 
 ```js
+userCheck.lastIndex = 0;
 assert(userCheck.test('RegexGuru'));
 ```
 
 La tua espressione regolare non dovrebbe riconoscere la stringa `007`
 
 ```js
+userCheck.lastIndex = 0;
 assert(!userCheck.test('007'));
 ```
 
 La tua espressione regolare non dovrebbe riconoscere la stringa `9`
 
 ```js
+userCheck.lastIndex = 0;
 assert(!userCheck.test('9'));
 ```
 
 La tua espressione regolare non dovrebbe riconoscere la stringa `A1`
 
 ```js
+userCheck.lastIndex = 0;
 assert(!userCheck.test('A1'));
 ```
 
 La tua espressione regolare non dovrebbe riconoscere la stringa `BadUs3rnam3`
 
 ```js
+userCheck.lastIndex = 0;
 assert(!userCheck.test('BadUs3rnam3'));
 ```
 
 La tua espressione regolare dovrebbe riconoscere la stringa `Z97`
 
 ```js
+userCheck.lastIndex = 0;
 assert(userCheck.test('Z97'));
 ```
 
 La tua espressione regolare non dovrebbe riconoscere la stringa `c57bT3`
 
 ```js
+userCheck.lastIndex = 0;
 assert(!userCheck.test('c57bT3'));
 ```
 
 La tua espressione regolare dovrebbe riconoscere la stringa `AB1`
 
 ```js
+userCheck.lastIndex = 0;
 assert(userCheck.test('AB1'));
 ```
 
 La tua espressione regolare non dovrebbe riconoscere la stringa `J%4`
 
 ```js
+userCheck.lastIndex = 0;
 assert(!userCheck.test('J%4'))
 ```
 

curriculum/challenges/italian/02-javascript-algorithms-and-data-structures/regular-expressions/reuse-patterns-using-capture-groups.md

@@ -52,12 +52,14 @@ assert(reRegex.source.match(/\\1|\\2/g).length >= 2);
 La tua espressione regolare dovrebbe riconoscere la stringa `42 42 42`.
 
 ```js
+reRegex.lastIndex = 0;
 assert(reRegex.test('42 42 42'));
 ```
 
 La tua espressione regolare dovrebbe riconoscere la stringa `100 100 100`.
 
 ```js
+reRegex.lastIndex = 0;
 assert(reRegex.test('100 100 100'));
 ```
 
@@ -76,18 +78,21 @@ assert.equal('42 42'.match(reRegex.source), null);
 La tua espressione regolare non dovrebbe riconoscere la stringa `101 102 103`.
 
 ```js
+reRegex.lastIndex = 0;
 assert(!reRegex.test('101 102 103'));
 ```
 
 La tua espressione regolare non dovrebbe riconoscere la stringa `1 2 3`.
 
 ```js
+reRegex.lastIndex = 0;
 assert(!reRegex.test('1 2 3'));
 ```
 
 La tua espressione regolare dovrebbe riconoscere la stringa `10 10 10`.
 
 ```js
+reRegex.lastIndex = 0;
 assert(reRegex.test('10 10 10'));
 ```
 

curriculum/challenges/italian/02-javascript-algorithms-and-data-structures/regular-expressions/specify-only-the-lower-number-of-matches.md

@@ -41,12 +41,14 @@ assert(haRegex.source.match(/{.*?}/).length > 0);
 La tua espressione regolare non dovrebbe riconoscere la stringa `Hazzah`
 
 ```js
+haRegex.lastIndex = 0;
 assert(!haRegex.test('Hazzah'));
 ```
 
 La tua espressione regolare non dovrebbe riconoscere la stringa `Hazzzah`
 
 ```js
+haRegex.lastIndex = 0;
 assert(!haRegex.test('Hazzzah'));
 ```
 

curriculum/challenges/italian/02-javascript-algorithms-and-data-structures/regular-expressions/specify-upper-and-lower-number-of-matches.md

@@ -39,6 +39,7 @@ assert(ohRegex.source.match(/{.*?}/).length > 0);
 La tua espressione regolare non dovrebbe riconoscere la stringa `Ohh no`
 
 ```js
+ohRegex.lastIndex = 0;
 assert(!ohRegex.test('Ohh no'));
 ```
 
@@ -69,6 +70,7 @@ assert('Ohhhhhh no'.match(ohRegex)[0].length === 10);
 La tua espressione regolare non dovrebbe riconoscere la stringa `Ohhhhhhh no`
 
 ```js
+ohRegex.lastIndex = 0;
 assert(!ohRegex.test('Ohhhhhhh no'));
 ```
 

curriculum/challenges/portuguese/02-javascript-algorithms-and-data-structures/regular-expressions/find-one-or-more-criminals-in-a-hunt.md

@@ -69,12 +69,14 @@ assert(
 A regex não deve encontrar nenhum criminoso na string vazia `""`
 
 ```js
+reCriminals.lastIndex = 0;
 assert(!reCriminals.test(''));
 ```
 
 A regex não deve encontrar nenhum criminoso na string `P1P2P3`
 
 ```js
+reCriminals.lastIndex = 0;
 assert(!reCriminals.test('P1P2P3'));
 ```
 

curriculum/challenges/portuguese/02-javascript-algorithms-and-data-structures/regular-expressions/ignore-case-while-matching.md

@@ -23,60 +23,70 @@ Escreva uma regex `fccRegex` que encontre `freeCodeCamp`, não importa em que ca
 A regex deve encontrar a string `freeCodeCamp`
 
 ```js
+fccRegex.lastIndex = 0; 
 assert(fccRegex.test('freeCodeCamp'));
 ```
 
 A regex deve encontrar a string `FreeCodeCamp`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(fccRegex.test('FreeCodeCamp'));
 ```
 
 A regex deve encontrar a string `FreecodeCamp`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(fccRegex.test('FreecodeCamp'));
 ```
 
 A regex deve encontrar a string `FreeCodecamp`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(fccRegex.test('FreeCodecamp'));
 ```
 
 A regex não deve encontrar a string `Free Code Camp`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(!fccRegex.test('Free Code Camp'));
 ```
 
 A regex deve encontrar a string `FreeCOdeCamp`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(fccRegex.test('FreeCOdeCamp'));
 ```
 
 A regex não deve encontrar a string `FCC`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(!fccRegex.test('FCC'));
 ```
 
 A regex deve encontrar a string `FrEeCoDeCamp`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(fccRegex.test('FrEeCoDeCamp'));
 ```
 
 A regex deve encontrar a string `FrEeCodECamp`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(fccRegex.test('FrEeCodECamp'));
 ```
 
 A regex deve encontrar a string `FReeCodeCAmp`
 
 ```js
+fccRegex.lastIndex = 0;
 assert(fccRegex.test('FReeCodeCAmp'));
 ```
 

curriculum/challenges/portuguese/02-javascript-algorithms-and-data-structures/regular-expressions/match-a-literal-string-with-different-possibilities.md

@@ -25,42 +25,49 @@ Complete a regex `petRegex` para encontrar os pets `dog`, `cat`, `bird`, ou `fis
 A regex `petRegex` deve retornar `true` para a string `John has a pet dog.`
 
 ```js
+petRegex.lastIndex = 0;
 assert(petRegex.test('John has a pet dog.'));
 ```
 
 A regex `petRegex` deve retornar `false` para a string `Emma has a pet rock.`
 
 ```js
+petRegex.lastIndex = 0;
 assert(!petRegex.test('Emma has a pet rock.'));
 ```
 
 A regex `petRegex` deve retornar `true` para a string `Emma has a pet bird.`
 
 ```js
+petRegex.lastIndex = 0;
 assert(petRegex.test('Emma has a pet bird.'));
 ```
 
 A regex `petRegex` deve retornar `true` para a string `Liz has a pet cat.`
 
 ```js
+petRegex.lastIndex = 0;
 assert(petRegex.test('Liz has a pet cat.'));
 ```
 
 A regex `petRegex` deve retornar `false` para a string `Kara has a pet dolphin.`
 
 ```js
+petRegex.lastIndex = 0;
 assert(!petRegex.test('Kara has a pet dolphin.'));
 ```
 
 A regex `petRegex` deve retornar `true` para a string `Alice has a pet fish.`
 
 ```js
+petRegex.lastIndex = 0;
 assert(petRegex.test('Alice has a pet fish.'));
 ```
 
 A regex `petRegex` deve retornar `false` para a string `Jimmy has a pet computer.`
 
 ```js
+petRegex.lastIndex = 0;
 assert(!petRegex.test('Jimmy has a pet computer.'));
 ```
 

curriculum/challenges/portuguese/02-javascript-algorithms-and-data-structures/regular-expressions/match-beginning-string-patterns.md

@@ -43,12 +43,14 @@ assert(calRegex.flags == '');
 A regex deve capturar a string `Cal` no começo de uma string.
 
 ```js
+calRegex.lastIndex = 0;
 assert(calRegex.test('Cal and Ricky both like racing.'));
 ```
 
 A regex não deve capturar a string `Cal` no meio de uma string.
 
 ```js
+calRegex.lastIndex = 0;
 assert(!calRegex.test('Ricky and Cal both like racing.'));
 ```
 

curriculum/challenges/portuguese/02-javascript-algorithms-and-data-structures/regular-expressions/match-ending-string-patterns.md

@@ -43,6 +43,7 @@ assert(lastRegex.flags == '');
 Você deve capturar `caboose` no fim da string `The last car on a train is the caboose`
 
 ```js
+lastRegex.lastIndex = 0;
 assert(lastRegex.test('The last car on a train is the caboose'));
 ```
 

curriculum/challenges/portuguese/02-javascript-algorithms-and-data-structures/regular-expressions/match-literal-strings.md

@@ -38,12 +38,14 @@ Complete a regex `waldoRegex` para encontrar `"Waldo"` na string `waldoIsHiding`
 A regex `waldoRegex` deve encontrar a string `Waldo`
 
 ```js
+waldoRegex.lastIndex = 0;
 assert(waldoRegex.test(waldoIsHiding));
 ```
 
 A regex `waldoRegex` não deve buscar nada além disso.
 
 ```js
+waldoRegex.lastIndex = 0;
 assert(!waldoRegex.test('Somewhere is hiding in this text.'));
 ```
 

curriculum/challenges/portuguese/02-javascript-algorithms-and-data-structures/regular-expressions/positive-and-negative-lookahead.md

@@ -52,48 +52,56 @@ assert(pwRegex.source.match(/\(\?=.*?\)\(\?=.*?\)/) !== null);
 A regex não deve encontrar a string `astronaut`
 
 ```js
+pwRegex.lastIndex = 0;
 assert(!pwRegex.test('astronaut'));
 ```
 
 A regex não deve encontrar a string `banan1`
 
 ```js
+pwRegex.lastIndex = 0;
 assert(!pwRegex.test('banan1'));
 ```
 
 A regex deve encontrar a string `bana12`
 
 ```js
+pwRegex.lastIndex = 0;
 assert(pwRegex.test('bana12'));
 ```
 
 A regex deve encontrar a string `abc123`
 
 ```js
+pwRegex.lastIndex = 0;
 assert(pwRegex.test('abc123'));
 ```
 
 A regex não deve encontrar a string `12345`
 
 ```js
+pwRegex.lastIndex = 0;
 assert(!pwRegex.test('12345'));
 ```
 
 A regex deve encontrar a string `8pass99`
 
 ```js
+pwRegex.lastIndex = 0;
 assert(pwRegex.test('8pass99'));
 ```
 
 A regex não deve encontrar a string `1a2bcde`
 
 ```js
+pwRegex.lastIndex = 0;
 assert(!pwRegex.test('1a2bcde'));
 ```
 
 A regex deve encontrar a string `astr1on11aut`
 
 ```js
+pwRegex.lastIndex = 0;
 assert(pwRegex.test('astr1on11aut'));
 ```
 

curriculum/challenges/portuguese/02-javascript-algorithms-and-data-structures/regular-expressions/restrict-possible-usernames.md

@@ -29,78 +29,91 @@ Modifique a regex `userCheck` para que inclua as regras listadas.
 A regex deve encontrar a string `JACK`
 
 ```js
+userCheck.lastIndex = 0;
 assert(userCheck.test('JACK'));
 ```
 
 A regex não deve encontrar a string `J`
 
 ```js
+userCheck.lastIndex = 0;
 assert(!userCheck.test('J'));
 ```
 
 A regex deve encontrar a string `Jo`
 
 ```js
+userCheck.lastIndex = 0;
 assert(userCheck.test('Jo'));
 ```
 
 A regex deve encontrar a string `Oceans11`
 
 ```js
+userCheck.lastIndex = 0;
 assert(userCheck.test('Oceans11'));
 ```
 
 A regex deve encontrar a string `RegexGuru`
 
 ```js
+userCheck.lastIndex = 0;
 assert(userCheck.test('RegexGuru'));
 ```
 
 A regex não deve encontrar a string `007`
 
 ```js
+userCheck.lastIndex = 0;
 assert(!userCheck.test('007'));
 ```
 
 A regex não deve encontrar a string `9`
 
 ```js
+userCheck.lastIndex = 0;
 assert(!userCheck.test('9'));
 ```
 
 A regex não deve encontrar a string `A1`
 
 ```js
+userCheck.lastIndex = 0;
 assert(!userCheck.test('A1'));
 ```
 
 A regex não deve encontrar a string `BadUs3rnam3`
 
 ```js
+userCheck.lastIndex = 0;
 assert(!userCheck.test('BadUs3rnam3'));
 ```
 
 A regex deve encontrar a string `Z97`
 
 ```js
+userCheck.lastIndex = 0;
 assert(userCheck.test('Z97'));
 ```
 
 A regex não deve encontrar a string `c57bT3`
 
 ```js
+userCheck.lastIndex = 0;
 assert(!userCheck.test('c57bT3'));
 ```
 
 A regex deve encontrar a string `AB1`
 
 ```js
+userCheck.lastIndex = 0;
 assert(userCheck.test('AB1'));
 ```
 
 A regex não deve encontrar a string `J%4`
 
 ```js
+userCheck.lastIndex = 0;
 assert(!userCheck.test('J%4'))
 ```
 

curriculum/challenges/portuguese/02-javascript-algorithms-and-data-structures/regular-expressions/reuse-patterns-using-capture-groups.md

@@ -52,12 +52,14 @@ assert(reRegex.source.match(/\\1|\\2/g).length >= 2);
 A regex deve encontrar a string `42 42 42`.
 
 ```js
+reRegex.lastIndex = 0;
 assert(reRegex.test('42 42 42'));
 ```
 
 A regex deve encontrar a string `100 100 100`.
 
 ```js
+reRegex.lastIndex = 0;
 assert(reRegex.test('100 100 100'));
 ```
 
@@ -76,18 +78,21 @@ assert.equal('42 42'.match(reRegex.source), null);
 A regex não deve encontrar a string `101 102 103`.
 
 ```js
+reRegex.lastIndex = 0;
 assert(!reRegex.test('101 102 103'));
 ```
 
 A regex não deve encontrar a string `1 2 3`.
 
 ```js
+reRegex.lastIndex = 0;
 assert(!reRegex.test('1 2 3'));
 ```
 
 A regex deve encontrar a string `10 10 10`.
 
 ```js
+reRegex.lastIndex = 0;
 assert(reRegex.test('10 10 10'));
 ```
 

curriculum/challenges/portuguese/02-javascript-algorithms-and-data-structures/regular-expressions/specify-only-the-lower-number-of-matches.md

@@ -41,12 +41,14 @@ assert(haRegex.source.match(/{.*?}/).length > 0);
 A regex não deve encontrar a string `Hazzah`
 
 ```js
+haRegex.lastIndex = 0;
 assert(!haRegex.test('Hazzah'));
 ```
 
 A regex não deve encontrar a string `Hazzzah`
 
 ```js
+haRegex.lastIndex = 0;
 assert(!haRegex.test('Hazzzah'));
 ```
 

curriculum/challenges/portuguese/02-javascript-algorithms-and-data-structures/regular-expressions/specify-upper-and-lower-number-of-matches.md

@@ -39,6 +39,7 @@ assert(ohRegex.source.match(/{.*?}/).length > 0);
 A regex não deve encontrar a string `Ohh no`
 
 ```js
+ohRegex.lastIndex = 0;
 assert(!ohRegex.test('Ohh no'));
 ```
 
@@ -69,6 +70,7 @@ assert('Ohhhhhh no'.match(ohRegex)[0].length === 10);
 A regex não deve encontrar a string `Ohhhhhhh no`
 
 ```js
+ohRegex.lastIndex = 0;
 assert(!ohRegex.test('Ohhhhhhh no'));
 ```