JSFiddle - React, Tailwind, and code Playground

JavaScript

var email="[email protected]"
var match=email.match(/^([a-z0-9\+_\-]+)(\.[a-z0-9\+_\-]+)*@([a-z0-9\-]+\.)+[a-z]{2,6}$/gi)
if(match)
{
    alert("correct");
}else
{
    alert("incorrect");    
}