JSFiddle - React, Tailwind, and code Playground

by epinapala

JavaScript

var isEmail_re       = /^\s*[\w\-\+_]+(\.[\w\-\+_]+)*\@[\w\-\+_]+\.[\w\-\+_]+(\.[\w\-\+_]+)*\s*$/;

function isEmail (s) {
   return String(s).search (isEmail_re) != -1;
}

alert(isEmail ('"xyz"<[email protected]>'));