trying-dev/validate.html at master · imajit/trying-dev · GitHub

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<!DOCTYPE html>
<html>
<head>
	<title>email check</title>
	<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js">
</script>
	<style type="text/css">
		label{
			position: relative;
			padding: 4px;
			width: 50px;
			float: left;
		}
		input{
			height:40px;
			font-style: sans-serif;
			font-size: 120%;
			border-radius: 5%;
			border:2px grey solid;
			text-align: center;
		}
		div {
			  display: flex;
			  align-items: center;
  			justify-content: center;
	}
	</style>
</head>
<body>
	<div id="wrapper">
<label for="email">Email</label><input type="text" name="email" placeholder="ajitmujumdar25999@gmail.com" id="aaa">
</div>
<div><button>Submit</button></div>

<script type="text/javascript">
	var regex1=/.com/;
	var regex2=/@/;
	var string="";
	$("button").click(function(){
	string=document.getElementById("aaa").value;
	if(string.match(regex1)!=null && string.match(regex2)!=null)
		alert("correct email");
	else
		alert("incorrect email");
	});
</script>
</body>
</html>