aff0ea700d
* chore(i8n,learn): processed translations * fix: restore deleted test * fix: revert casing change Co-authored-by: Crowdin Bot <support+bot@crowdin.com>
92 lines
1.3 KiB
Markdown
92 lines
1.3 KiB
Markdown
---
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id: 56533eb9ac21ba0edf2244b1
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title: 复合赋值之 *=
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challengeType: 1
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videoUrl: 'https://scrimba.com/c/c83vrfa'
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forumTopicId: 16662
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dashedName: compound-assignment-with-augmented-multiplication
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---
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# --description--
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`*=` 操作符是让变量与一个数相乘并赋值。
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`myVar = myVar * 5;`
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变量 `myVar` 等于自身与数值 `5` 相乘的值。 也可以写作这样的形式:
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`myVar *= 5;`
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# --instructions--
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使用 `*=` 操作符给 `a`，`b` 和 `c` 实现赋值相乘操作。
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# --hints--
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`a` 应该等于`25`。
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```js
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assert(a === 25);
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```
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`b` 应该等于`36`。
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```js
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assert(b === 36);
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```
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`c` 应该等于`46`。
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```js
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assert(c === 46);
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```
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应该对每个变量使用 `*=` 操作符。
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```js
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assert(code.match(/\*=/g).length === 3);
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```
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不要修改注释上面的代码。
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```js
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assert(
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/var a = 5;/.test(code) &&
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/var b = 12;/.test(code) &&
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/var c = 4\.6;/.test(code)
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);
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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(a,b,c){ return "a = " + a + ", b = " + b + ", c = " + c; })(a,b,c);
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```
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## --seed-contents--
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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 change 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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# --solutions--
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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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a *= 5;
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b *= 3;
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c *= 10;
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```
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