JavaScript

Using RegEx(Regular Expressions) in JavaScript

Javascript has built-in support for regular expression in almost all browsers. This means you can use regular expression at client side too. You can use to validate the user’s input data at client side itself to reduce the server side processing, however you may want to check those at server side too for security problems.




To use regular expression in javascript you can use the RegExp object

Or you can directly creates its instance by using special syntax

To test a string against a RegExp

If you want to extract multiple matched from the input string

 

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