email validation js

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Cristóbal
12 Apr 2019
1function isValidEmail(email) {
2  const re = /^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;
3  return re.test(String(email).toLowerCase());
4}
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Isabel
03 Nov 2017
1/* Answer to: "email regex javascript" */
2
3ValidateEmail("icecream123@yahoo.com"); // Must be a string
4
5function ValidateEmail(email) {
6	var emailformat = /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(String(email).toLowerCase());
7	if (email.match(emailformat)) {
8    	alert("Nice Email!")
9      	return true;
10    };
11    alert("That's not an email?!")
12    return (false);
13};
Nicole
21 May 2016
1/// if you want  create your regular expression then you can  follow this site 
2/////https://regex101.com///////
3<!DOCTYPE html>
4<html>
5<head>
6	<title></title>
7</head>
8<body>
9<form method="post" action="">
10	Email:<input type="text"  id="email" onkeyup="validation()">
11	</form>
12</body>
13<script type="text/javascript">
14	function validation(){
15	var email=document.getElementById("email").value;///get id with value 
16	var emailpattern=/^[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+@[a-zA-Z0-9-]+(?:\.[a-zA-Z0-9-]+)*$/;////Regular expression
17	if(emailpattern.test(email))
18	{
19		document.getElementById("email").style.backgroundColor='yellow';
20    }
21    else
22    {
23    	document.getElementById("email").style.backgroundColor='red'; }
24	}
25
26</script>
27</html>
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