JavaScript Replace

JavaScript replace

replace()

This method finds a match between a regular expression and a string, and replaces matched substring with a new substring.

This replacement substring can include the following special replacement patterns:

Syntax

String.replace(repExp/substr,newSubstr/function[,flags]);

Example

Output

 

Parameters  

Parameter	Description
regexp	A RegExp object. The match is replaced by the return value of parameter #2.
substr	A string that is to be replaced by a new substr.
newSubStr	The string that replaces the substring received from parameter #1
Function	A function to be created is invoked to create the new substring.
Flags	A string containing any combination of the RegExp flags: g – global match over multiple lines. This parameter is only used if the first parameter is a string.

 

Return Value

It simply returns a new changed string.