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---
id: 56533eb9ac21ba0edf2244b5
title: 转义字符串中的引号
challengeType: 1
videoUrl: 'https://scrimba.com/c/c2QvgSr'
forumTopicId: 17568
---
# --description--
定义一个字符串必须要用单引号或双引号来包裹它。那么当你的字符串里面包含:`"`或者`'`时该怎么办呢?
在 JavaScript 中,你可以通过在引号前面使用<dfn>反斜杠</dfn>`\`)来转义引号。
`var sampleStr = "Alan said, \"Peter is learning JavaScript\".";`
有了转义符号JavaScript 就知道这个单引号或双引号并不是字符串的结尾,而是字符串内的字符。所以,上面的字符串打印到控制台的结果为:
`Alan said, "Peter is learning JavaScript".`
# --instructions--
使用<dfn>反斜杠</dfn>将一个字符串赋值给变量`myStr`,打印到控制台,输出为:
`I am a "double quoted" string inside "double quotes".`
# --hints--
你的代码中应该包含两个双引号 (`"`) 以及四个转义的双引 (`\"`)。
```js
assert(code.match(/\\"/g).length === 4 && code.match(/[^\\]"/g).length === 2);
```
变量 myStr 应该包含字符串`I am a "double quoted" string inside "double quotes".`
```js
assert(myStr === 'I am a "double quoted" string inside "double quotes".');
```
# --solutions--