74 lines
1.7 KiB
Markdown
74 lines
1.7 KiB
Markdown
---
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id: 56533eb9ac21ba0edf2244b1
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title: Compound Assignment With Augmented Multiplication
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challengeType: 1
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videoUrl: ''
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localeTitle: 具有增广乘法的复合赋值
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---
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## Description
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<section id="description"> <code>*=</code>运算符将变量乘以数字。 <code>myVar = myVar * 5;</code>将<code>myVar</code>乘以<code>5</code> 。这可以改写为： <code>myVar *= 5;</code> </section>
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## Instructions
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<section id="instructions">转换<code>a</code> ， <code>b</code>和<code>c</code>的赋值以使用<code>*=</code>运算符。 </section>
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## Tests
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<section id='tests'>
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```yml
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tests:
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- text: <code>a</code>应该等于<code>25</code>
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testString: 'assert(a === 25, "<code>a</code> should equal <code>25</code>");'
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- text: <code>b</code>应该等于<code>36</code>
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testString: 'assert(b === 36, "<code>b</code> should equal <code>36</code>");'
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- text: <code>c</code>应该等于<code>46</code>
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testString: 'assert(c === 46, "<code>c</code> should equal <code>46</code>");'
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- text: 您应该为每个变量使用<code>*=</code>运算符
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testString: 'assert(code.match(/\*=/g).length === 3, "You should use the <code>*=</code> operator for each variable");'
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- text: 不要修改行上方的代码
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testString: 'assert(/var a = 5;/.test(code) && /var b = 12;/.test(code) && /var c = 4\.6;/.test(code), "Do not modify the code above the line");'
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```
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</section>
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## Challenge Seed
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<section id='challengeSeed'>
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<div id='js-seed'>
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```js
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var a = 5;
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var b = 12;
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var c = 4.6;
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// Only modify code below this line
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a = a * 5;
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b = 3 * b;
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c = c * 10;
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```
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</div>
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### After Test
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<div id='js-teardown'>
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```js
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console.info('after the test');
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```
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</div>
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</section>
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## Solution
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<section id='solution'>
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```js
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// solution required
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```
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</section>
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