JavaScript String slice()Method
JavaScript String ObjectExample
Extract a portion of the string:
var n=str.slice(1,5);
nOutput result:
Try it Yourself »
Definition and Usage
The slice(start, end) method extracts a part of a string and returns the extracted part as a new string.
Use the start (inclusive) and end (exclusive) parameters to specify the part of the string to extract.
In the start parameter, the first character in the string is at position 0, the second character at position 1, and so on. If it is a negative number, it indicates how many characters to extract from the tail. slice(-2) extracts the second-to-last element to the last element (including the last element) from the original array.
If the end parameter is negative, -1 refers to the position of the last character in the string, -2 refers to the second-to-last character, and so on.
Browser Support
All major browsers support the slice() method.
Syntax
Parameter Values
| Parameter | Description |
|---|---|
| start | Required. The starting index of the segment to be extracted; the first character is at position 0. If negative, it is taken from the tail. |
| end | Optional. The index immediately after the end of the segment to be extracted. If this parameter is not specified, the extracted substring includes the characters from start to the end of the original string. If this parameter is negative, it specifies a position counted from the tail of the string. slice(-2) extracts the second-to-last element to the last element (including the last element) from the original array. |
Return Value
| Type | Description |
|---|---|
| String | The extracted string. |
Technical Details
| JavaScript Version: | 1.0 |
|---|
More Examples
Example
Extract the whole string:
var n=str.slice(0);
The output result of the above example:
Try it Yourself »
Example
Extract the string segment from position 3 of the string:
var n=str.slice(3);
The output result of the above example:
Try it Yourself »
Example
Extract the string segment from position 3 to position 8 of the string:
var n=str.slice(3,8);
The output result of the above example:
Try it Yourself »
Example
Extract only the first character:
var n=str.slice(0,1);
The output result of the above example:
Try it Yourself »
Example
Extract the last character and the last two characters:
var n=str.slice(-1);
var n2=str.slice(-2);
The output result of the above example:
d!
Try it Yourself »
Other Extensions