mithilesh kumar singh

Slice()


The slice() method extracts parts of a string and returns the extracted parts in a new string.
Use the start and end parameters to specify the part of the string you want to extract.
The first character has the position 0, the second has position 1, and so on.

Note: Use a negative number to select from the end of the string.

Syntax

string.slice(start,end)

Parameter Values

Parameter:start 

Description : Required. The position where to begin the extraction. First character is at position 0
Parameter:end 
Description :Optional. The position (up to, but not including) where to end the extraction. If omitted, slice() selects all characters from the start-position to the end of the string

Example 1.

Extract the whole string:

var str = "Hello world!";
var res = str.slice(0);

The result of res will be:
Hello world!


Example 2.

Extract from position 3, and to the end:
var str = "Hello world!";
var res = str.slice(3);

The result of res will be:
lo world!

Example 3.

Extract the characters from position 3 to 8:
var str = "Hello world!";
var res = str.slice(3, 8);

The result of res will be:
lo wo

Example 4.

Extract only the first character:

var str = "Hello world!";
var res = str.slice(0, 1);

The result of res will be:

H

Example 5.

Extract only the last character:

var str = "Hello world!";
var res = str.slice(-1);

The result of res will be:

!