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JavaScript replace() Method
Example
Return a string where "Microsoft" is replaced with "W3Schools":
var str="Visit Microsoft!";
var n=str.replace("Microsoft","W3Schools");
var n=str.replace("Microsoft","W3Schools");
The result of n will be:
Visit W3Schools!
Try it yourself »
Definition and Usage
The replace() method searches a string for a specified value, or a regular expression, and returns a new string where the specified values are replaced.
Read more about regular expressions in our RegExp Tutorial and our RegExp Object Reference.
This method does not change the original string.
Browser Support
The replace() method is supported in all major browsers.
Syntax
string.replace(searchvalue,newvalue)
Parameter Values
| Parameter | Description |
|---|---|
| searchvalue | Required. The value, or regular expression, that will be replaced by the new value |
| newvalue | Required. The value to replace the searchvalue with |
Return Value
| Type | Description |
|---|---|
| String | A new string where the specified value(s) has been replaced by the new value |
Technical Details
| JavaScript Version: | 1.2 |
|---|
More Examples
Example
Perform a global replacement:
var str="Mr Blue has a blue house and a blue car";
var n=str.replace(/blue/g,"red");
var n=str.replace(/blue/g,"red");
The result of n will be:
Mr Blue has a red house and a red car
Try it yourself »
Example
Perform a global, case-insensitive replacement:
var str="Mr Blue has a blue house and a blue car";
var n=str.replace(/blue/gi, "red");
var n=str.replace(/blue/gi, "red");
The result of n will be:
Mr red has a red house and a red car
Try it yourself »
JavaScript String Object
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