typescript slice
时间: 2023-08-18 12:15:04 浏览: 58
在TypeScript中,slice()方法用于提取字符串的某个部分并返回一个新字符串。该方法有两个参数,start和end,分别表示要提取的片段的起始下标和结束下标。如果省略end参数,则提取从start到字符串末尾的所有字符。如果参数是负数,则表示从字符串尾部开始算起。举个例子:
```typescript
let str = "Hello happy world!";
let sliced = str.slice(6, 11);
console.log(sliced); // happy
```
在上面的例子中,slice(6, 11)表示提取从索引6开始到索引10(不包括索引11)的字符,即"happy"。
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