onblur

Simple confirm password or email validation

If you have a form with a ‘confirm password’ field or ‘confirm email’, and you don’t want to use a heavy validation plugin just for a simple confirmation like this, you can always use some simple ‘old school’ javascript and the onblur event, so when the field loses focus triggers the validation function.

<script type="text/javascript">
	function confirmPass() {
		var pass = document.getElementById("pass").value
		var confPass = document.getElementById("c_pass").value
		if(pass != confPass) {
			alert('Wrong confirm password !');
		}
	}
</script>
<form id="form" action="" method="post">
    <label for="pass">Password</label>
    <input type="password" id="pass" class="text" name="your_pass" value=""/>
    <label for="c_pass">Confirm Password</label>
    <input type="password" id="c_pass" class="text" name="your_c_pass" value="" onblur="confirmPass()"/>
</form>

See a demo.