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>
69 lines
1.4 KiB
Markdown
69 lines
1.4 KiB
Markdown
---
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id: 56533eb9ac21ba0edf2244ed
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title: 将变量附加到字符串
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challengeType: 1
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videoUrl: 'https://scrimba.com/c/cbQmZfa'
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forumTopicId: 16656
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dashedName: appending-variables-to-strings
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---
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# --description--
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我们不仅可以创建出多行的字符串，还可以使用加等号(`+=`)运算符来将变量追加到字符串。
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# --instructions--
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设置变量`someAdjective`的值，并使用`+=`运算符把它追加到变量`myStr`上。
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# --hints--
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`someAdjective`应该是一个至少包含三个字符的字符串。
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```js
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assert(typeof someAdjective !== 'undefined' && someAdjective.length > 2);
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```
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使用`+=`操作符把`someAdjective`追加到`myStr`的后面。
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```js
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assert(code.match(/myStr\s*\+=\s*someAdjective\s*/).length > 0);
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```
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# --seed--
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## --after-user-code--
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```js
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(function(){
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var output = [];
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if(typeof someAdjective === 'string') {
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output.push('someAdjective = "' + someAdjective + '"');
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} else {
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output.push('someAdjective is not a string');
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}
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if(typeof myStr === 'string') {
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output.push('myStr = "' + myStr + '"');
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} else {
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output.push('myStr is not a string');
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}
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return output.join('\n');
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})();
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```
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## --seed-contents--
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```js
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// Change code below this line
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var someAdjective;
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var myStr = "Learning to code is ";
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```
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# --solutions--
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```js
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var someAdjective = "neat";
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var myStr = "Learning to code is ";
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myStr += someAdjective;
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```
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