freeCodeCamp/escaping-literal-quotes-in-strings.md at 873fce02a2d2124f3b76ce3f317fb29b34abb542

Oliver Eyton-Williams dec409a4bd fix: s/localeTitle/title/g

2020-10-06 23:10:08 +05:30

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id, challengeType, videoUrl, forumTopicId, title

id	challengeType	videoUrl	forumTopicId	title
56533eb9ac21ba0edf2244b5	1	https://scrimba.com/c/c2QvgSr	17568	转义字符串中的引号

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反斜杠（\）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

使用反斜杠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".

Tests

tests:
  - text: 你的代码中应该包含两个双引号 (<code>&quot;</code>) 以及四个转义的双引 (<code>&#92;&quot;</code>)。
    testString: assert(code.match(/\\"/g).length === 4 && code.match(/[^\\]"/g).length === 2);
  - text: 变量 myStr 应该包含字符串<code>I am a "double quoted" string inside "double quotes".</code>。
    testString: assert(myStr === "I am a \"double quoted\" string inside \"double quotes\".");

Challenge Seed

var myStr = ""; // Change this line

After Test

(function(){
  if(typeof myStr === 'string') {
    console.log("myStr = \"" + myStr + "\"");
  } else {
    console.log("myStr is undefined");
  }
})();

Solution

var myStr = "I am a \"double quoted\" string inside \"double quotes\".";

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