--- id: 587d7daa367417b2b2512b6b challengeType: 1 forumTopicId: 18305 localeTitle: 使用 split 方法将字符串拆分成数组 --- ## Description
split方法用于把字符串分割成字符串数组,接收一个分隔符参数,分隔符可以是用于分解字符串或正则表达式的字符。举个例子,如果分隔符是空格,你会得到一个单词数组;如果分隔符是空字符串,你会得到一个由字符串中每个字符组成的数组。 下面是两个用空格分隔一个字符串的例子,另一个是用数字的正则表达式分隔: ```js var str = "Hello World"; var bySpace = str.split(" "); // Sets bySpace to ["Hello", "World"] var otherString = "How9are7you2today"; var byDigits = otherString.split(/\d/); // Sets byDigits to ["How", "are", "you", "today"] ``` 因为字符串是固定的,split方法可以更简单的操作它们。
## Instructions
splitify函数中用split方法将str分割成单词数组,这个方法应该返回一个数组。单词不一定都是用空格分隔,所以数组中不应包含标点符号。
## Tests
```yml tests: - text: 应该使用split方法。 testString: assert(code.match(/\.split/g)); - text: "splitify('Hello World,I-am code')应返回['Hello', 'World', 'I', 'am', 'code']。" testString: assert(JSON.stringify(splitify("Hello World,I-am code")) === JSON.stringify(["Hello", "World", "I", "am", "code"])); - text: "splitify('Earth-is-our home')应返回['Earth', 'is', 'our', 'home']。" testString: assert(JSON.stringify(splitify("Earth-is-our home")) === JSON.stringify(["Earth", "is", "our", "home"])); - text: "splitify('This.is.a-sentence')应返回['This', 'is', 'a', 'sentence']。" testString: assert(JSON.stringify(splitify("This.is.a-sentence")) === JSON.stringify(["This", "is", "a", "sentence"])); ```
## Challenge Seed
```js function splitify(str) { // Add your code below this line // Add your code above this line } splitify("Hello World,I-am code"); ```
## Solution
```js function splitify(str) { // Add your code below this line return str.split(/\W/); // Add your code above this line } ```