ee1e8abd87
* feat(tools): add seed/solution restore script * chore(curriculum): remove empty sections' markers * chore(curriculum): add seed + solution to Chinese * chore: remove old formatter * fix: update getChallenges parse translated challenges separately, without reference to the source * chore(curriculum): add dashedName to English * chore(curriculum): add dashedName to Chinese * refactor: remove unused challenge property 'name' * fix: relax dashedName requirement * fix: stray tag Remove stray `pre` tag from challenge file. Signed-off-by: nhcarrigan <nhcarrigan@gmail.com> Co-authored-by: nhcarrigan <nhcarrigan@gmail.com>
91 lines
1.9 KiB
Markdown
91 lines
1.9 KiB
Markdown
---
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id: 587d7daa367417b2b2512b6c
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title: 使用 join 方法将数组组合成字符串
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challengeType: 1
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forumTopicId: 18221
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dashedName: combine-an-array-into-a-string-using-the-join-method
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---
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# --description--
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`join`方法用来把数组中的所有元素放入一个字符串，并通过指定的分隔符参数进行分隔。
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举个例子：
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```js
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var arr = ["Hello", "World"];
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var str = arr.join(" ");
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// Sets str to "Hello World"
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```
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# --instructions--
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在函数`sentensify`内用`join`方法（及其他方法）用字符串`str`中的单词造句，这个函数应返回一个字符串。举个例子，"I-like-Star-Wars" 会被转换成 "I like Star Wars"。在此挑战中请勿使用`replace`方法。
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# --hints--
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应使用`join`方法。
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```js
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assert(code.match(/\.join/g));
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```
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不能使用`replace`方法。
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```js
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assert(!code.match(/\.replace/g));
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```
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`sentensify('May-the-force-be-with-you')`应返回一个字符串
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```js
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assert(typeof sentensify('May-the-force-be-with-you') === 'string');
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```
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`sentensify('May-the-force-be-with-you')`应返回`'May the force be with you'`。
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```js
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assert(sentensify('May-the-force-be-with-you') === 'May the force be with you');
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```
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`sentensify('The.force.is.strong.with.this.one')`应返回`'The force is strong with this one'`。
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```js
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assert(
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sentensify('The.force.is.strong.with.this.one') ===
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'The force is strong with this one'
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);
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```
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`sentensify('There,has,been,an,awakening')`应返回`'There has been an awakening'`。
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```js
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assert(
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sentensify('There,has,been,an,awakening') === 'There has been an awakening'
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);
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```
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# --seed--
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## --seed-contents--
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```js
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function sentensify(str) {
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// Only change code below this line
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// Only change code above this line
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}
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sentensify("May-the-force-be-with-you");
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```
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# --solutions--
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```js
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function sentensify(str) {
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// Only change code below this line
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return str.split(/\W/).join(' ');
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// Only change code above this line
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}
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```
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