JSFiddle - React, Tailwind, and code Playground

by dingen2010

HTML

Email : <input type='text' />

JavaScript

$('input').blur(function() {
    var testEmail = /^[A-Z0-9._%+-]+@([A-Z0-9-]+\.)+[A-Z]{2,4}$/i;
    if (testEmail.test(this.value)) alert('passed');
    else alert('failed');
});