JavaScript slice () method
Examples
Extract pieces of the string:
var n=str.slice(1,5);
n output:
try it"
Definition and Usage
slice () method can extract a portion of the string and returns a new string is extracted portions.
Use start and end parameter to specify a string extraction portion.
The first character in the string position is 0, the second character position is 1, and so on.
Tip: If it is negative, then the parameter is specified from the end of the string since the beginning position.That is, the last character of -1 means that the string, -2 means the second last character, and so on.
Browser Support
All major browsers support slice () method.
grammar
Parameter Value
| 参数 | 描述 |
|---|---|
| start | 必须. 要抽取的片断的起始下标。第一个字符位置为 0 |
| end | 可选。 紧接着要抽取的片段的结尾的下标。若未指定此参数，则要提取的子串包括 start 到原字符串结尾的字符串。如果该参数是负数，那么它规定的是从字符串的尾部开始算起的位置。 |
return value
| 类型 | 描述 |
|---|---|
| String | The extracted part of the string |
technical details
| JavaScript version: | 1.0 |
|---|
More examples
Examples
Extract all strings:
var n=str.slice(0);
Examples of the above output:
try it"
Examples
String fragment extracted from the third position of the string:
var n=str.slice(3);
Examples of the above output:
try it"
Examples
8 string fragment extracted from the third position of the string:
var n=str.slice(3,8);
Examples of the above output:
try it"
Examples
Extract only the first one character:
var n=str.slice(0,1);
Examples of the above output:
try it"
Examples
Extraction last character:
var n=str.slice(-1);
Examples of the above output:
try it"