2022-08-25 16:56 江苏海洋大学 Node.js 发布于江苏
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**`split()`** 方法使用指定的分隔符字符串将一个[`String`](https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/String)对象分割成子字符串数组，以一个指定的分割字串来决定每个拆分的位置。
```js
const str = 'The quick brown fox jumps over the lazy dog.';
const words = str.split(' ');
console.log(words);
//Array ["The", "quick", "brown", "fox", "jumps", "over", "the", "lazy", "dog."]
const chars = str.split('');
console.log(chars);
// ["T", "h", "e", " ", "q", "u", "i", "c", "k", " ", "b", "r"......
const strCopy = str.split();
console.log(strCopy);
// expected output: Array ["The quick brown fox jumps over the lazy dog."]
```
**适用于字符串转为数组**
```js
const str = 'The quick brown fox jumps over the lazy dog.';
const words = str.split(' ');
console.log(words);
//Array ["The", "quick", "brown", "fox", "jumps", "over", "the", "lazy", "dog."]
const chars = str.split('');
console.log(chars);
// ["T", "h", "e", " ", "q", "u", "i", "c", "k", " ", "b", "r"......
const strCopy = str.split();
console.log(strCopy);
// expected output: Array ["The quick brown fox jumps over the lazy dog."]
```
**适用于字符串转为数组**
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