YouTipJsref Replaceall
# JavaScript replaceAll() Method
[ JavaScript String Object](#)
## Example
In this example, we replace all occurrences of "Microsoft" with "":
var str="Visit Microsoft! Visit Microsoft!"; var n=str.replaceAll("Microsoft","");
_n_ Output:
Visit !Visit !
[Try it »](#)
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## Definition and Usage
The replaceAll() method is used to replace some characters with other characters in a string, or to replace a substring that matches a regular expression. This function replaces all matching substrings.
If you want to learn more about regular expression tutorials, please see our (#) and our (#).
This method does not change the original string.
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## Browser Support
!(#)
The IE browser on PC does not support this function.
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## Syntax
const newStr = str.replaceAll(regexp|substr, newSubstr|function)
## Parameter Values
| Parameter | Description |
| :--- | :--- |
| _regexp|substr_ | Required. Specifies the substring or the RegExp object of the pattern to be replaced. Note that if this value is a string, it is treated as a literal text pattern to search for, rather than being first converted to a RegExp object. When using a regex, you must set the global ("g") flag, otherwise, it will throw a TypeError: "String.prototype.replaceAll called with a non-global RegExp argument". |
| _newSubstr|function_ | Required. A string value. Specifies the replacement text or a function that generates the replacement text. |
## Return Value
| Type | Description |
| --- | --- |
| String | A new string, obtained after replacing all matches of regexp with newSubstr. |
## Technical Details
| JavaScript Version: | 1.2 |
| --- |
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## More Examples
## Example
Perform a global replacement:
var str="Mr Blue has a blue house and a blue car"; var n=str.replaceAll(/blue/ig,"red");
_n_ Output:
Mr red has a red house and a red car.
[Try it »](#)
* * JavaScript String Object](#)