--- id: 587d7b84367417b2b2512b37 title: 捕捉单引号和双引号的混合用法 challengeType: 1 forumTopicId: 301188 dashedName: catch-mixed-usage-of-single-and-double-quotes --- # --description-- JavaScript允许使用单引号('')和双引号("")声明字符串。决定使用哪一个通常看个人偏好,但有一些例外。 如果字符串中有缩写或存在一段带引号的文本,你就会明白为什么 JavaScript 允许两种引号了。请注意,不要提前用引号结束字符串,这会导致语法错误。 下面是混合使用引号的一些示例: ```js // These are correct: const grouchoContraction = "I've had a perfectly wonderful evening, but this wasn't it."; const quoteInString = "Groucho Marx once said 'Quote me as saying I was mis-quoted.'"; // This is incorrect: const uhOhGroucho = 'I've had a perfectly wonderful evening, but this wasn't it.'; ``` 当然,只使用一种引号是可以的。你可以使用反斜杠 (`\`) 转义字符来转义字符串中的引号: ```js // 一种引号的正确使用方式 const allSameQuotes = 'I\'ve had a perfectly wonderful evening, but this wasn\'t it.'; ``` # --instructions-- 修复字符串,对`href`属性的值使用不同的引号,或者转义现有的引号。注意,整个字符串外面的双引号要保留。 # --hints-- 你应通过更改或转义来修复`href`的值 '#Home' 周围的引号。 ```js assert(code.match(//g)); ``` 你应该在整个字符串外围保留双引号。 ```js assert(code.match(/"

.*?<\/p>";/g)); ``` # --seed-- ## --seed-contents-- ```js let innerHtml = "

Click here to return home

"; console.log(innerHtml); ``` # --solutions-- ```js let innerHtml = "

Click here to return home

"; console.log(innerHtml); ```