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>
67 lines
1.4 KiB
Markdown
67 lines
1.4 KiB
Markdown
---
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id: 56533eb9ac21ba0edf2244b9
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title: 用变量构造字符串
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challengeType: 1
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videoUrl: 'https://scrimba.com/c/cqk8rf4'
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forumTopicId: 16805
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dashedName: constructing-strings-with-variables
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---
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# --description--
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有时候你需要创建一个类似[Mad Libs](https://en.wikipedia.org/wiki/Mad_Libs)(填词游戏）风格的字符串。通过使用连接运算符`+`，你可以插入一个或多个变量来组成一个字符串。
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# --instructions--
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把你的名字赋值给变量`myName`，然后把变量`myName`插入到字符串`"My name is "`和`" and I am well!"`之间，并把连接后的结果赋值给变量`myStr`。
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# --hints--
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`myName`至少要包含三个字符。
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```js
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assert(typeof myName !== 'undefined' && myName.length > 2);
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```
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使用两个`+`操作符创建包含`myName`的`myStr`变量。
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```js
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assert(code.match(/["']\s*\+\s*myName\s*\+\s*["']/g).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 myName === 'string') {
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output.push('myName = "' + myName + '"');
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} else {
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output.push('myName 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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// Only change code below this line
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var myName;
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var myStr;
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```
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# --solutions--
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```js
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var myName = "Bob";
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var myStr = "My name is " + myName + " and I am well!";
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```
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