add validation to emiail code example
Example 1: how to validate mail adress css
<form>
<input pattern="/^[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+@[a-zA-Z0-9-]+(?:\.[a-zA-Z0-9-]+)*$/" required />
<br />
<input type="submit" value="Submit Now!">
</form>
Example 2: Email Validation in JavaScript
<!DOCTYPE html>
<html>
<head>
<title>Email validation</title>
<script type="text/javascript">
function email_funnction() {
var email = document.emailform.email.value;
if(email.indexOf('@')<=0){
document.getElementById('errormsg').innerHTML="Invalid your Email Address";
return false;
}
if ((email.charAt(email.length-4)!='.') && (email.charAt(email.length-3)!='.')) {
document.getElementById('errormsg').innerHTML="Invalid your Email Address";
return false;
}
}
</script>
</head>
<body>
<h1>Email Validation in javascript</h1>
<span id="errormsg"></span>
<form name="emailform" onsubmit="return email_funnction()">
<label>Email</label>
<input type="text" name="email" value="">
<input type="submit" name="" value="Submit">
</form>
</body>
</html>