JAVASCRIPT

Creating Regular Expression


We can  create regular expressions by using the RegExp constructor or by using a literal notation with slashes (/.../).

 

Creating a Regular Expression:

 

Using Literal Notation: 

let regex = /pattern/;

 

Using RegExp Constructor:

let regex = new RegExp('pattern');

 

Basic Pattern Matching:

 

Characters:

let regex = /hello Coders/;

 

Metacharacters:

Special characters with special meanings like `^`, `$`, `.`, `*`, `+`, `?`, `\`, `()`, `[]`, `{}`, etc.