How to use regular expressions in JS
Regex stands for regular expression and it is so awesome when it comes to string manipulations.
In JS, a regular expression is enclosed with /<regex>/ .
Let's take a look at few usecases.
To select a complete word
js
const site = 'AshKeys'console.log(site.match(/AshKeys/g)) // [ 'AshKeys' ]
This or that part
js
const site = 'AshKeys'console.log(site.match(/Ash|Keys/g)) // [ 'Ash', 'Keys' ]
This or that word
js
site = 'AshKeys'console.log(site.match(/Ash(Talks|Keys)/g)) // [ 'AshKeys', 'AshTalks' ]
Starts with
js
site = 'AshKeys or AshTalks'console.log(/^Ash/.test(site)) // true
Ends with
js
site = 'AshKeys or AshTalks'console.log(/Talks$/.test(site)) // true