96 lines
1.2 KiB
Markdown
96 lines
1.2 KiB
Markdown
---
|
||
id: 56533eb9ac21ba0edf2244b2
|
||
title: 复合赋值之 /=
|
||
challengeType: 1
|
||
videoUrl: 'https://scrimba.com/c/c2QvKT2'
|
||
forumTopicId: 16659
|
||
dashedName: compound-assignment-with-augmented-division
|
||
---
|
||
|
||
# --description--
|
||
|
||
`/=` 操作符是让变量与另一个数相除并赋值。
|
||
|
||
```js
|
||
myVar = myVar / 5;
|
||
```
|
||
|
||
将 `myVar` 除以 `5`。 等价于：
|
||
|
||
```js
|
||
myVar /= 5;
|
||
```
|
||
|
||
# --instructions--
|
||
|
||
使用 `/=` 操作符对 `a`，`b` 和 `c` 实现相除赋值操作。
|
||
|
||
# --hints--
|
||
|
||
`a` 应该等于 `4`。
|
||
|
||
```js
|
||
assert(a === 4);
|
||
```
|
||
|
||
`b` 应该等于 `27`。
|
||
|
||
```js
|
||
assert(b === 27);
|
||
```
|
||
|
||
`c` 应该等于`3`。
|
||
|
||
```js
|
||
assert(c === 3);
|
||
```
|
||
|
||
应该对每个变量使用 `/=` 操作符。
|
||
|
||
```js
|
||
assert(code.match(/\/=/g).length === 3);
|
||
```
|
||
|
||
不要修改注释上面的代码。
|
||
|
||
```js
|
||
assert(
|
||
/var a = 48;/.test(code) &&
|
||
/var b = 108;/.test(code) &&
|
||
/var c = 33;/.test(code)
|
||
);
|
||
```
|
||
|
||
# --seed--
|
||
|
||
## --after-user-code--
|
||
|
||
```js
|
||
(function(a,b,c){ return "a = " + a + ", b = " + b + ", c = " + c; })(a,b,c);
|
||
```
|
||
|
||
## --seed-contents--
|
||
|
||
```js
|
||
var a = 48;
|
||
var b = 108;
|
||
var c = 33;
|
||
|
||
// Only change code below this line
|
||
a = a / 12;
|
||
b = b / 4;
|
||
c = c / 11;
|
||
```
|
||
|
||
# --solutions--
|
||
|
||
```js
|
||
var a = 48;
|
||
var b = 108;
|
||
var c = 33;
|
||
|
||
a /= 12;
|
||
b /= 4;
|
||
c /= 11;
|
||
```
|