Forms >>> Validation Password.


		<script 
		language="javascript"
		type="text/javascript">

		/* Visit http://www.yaldex.com/ 
		for full source code

		and get more free JavaScript, CSS and DHTML scripts! */

		<!-- Begin

		function 
		validatePwd()
		{

		var 
		invalid =
		" ";
		// Invalid character is a space

		var 
		minLength =
		6;
		// Minimum length

		var 
		pw1 =
		document.myForm.password.value;

		var 
		pw2 =
		document.myForm.password2.value;

		// check for a value in both 
		fields.

		if
		(pw1
		==
		''
		|| 
		pw2 ==
		'')
		{

		alert('Please 
		enter your password twice.');

		return
		false;

		}

		// check for minimum length

		if
		(document.myForm.password.value.length
		< 
		minLength)
		{

		alert('Your 
		password must be at least ' 
		+ 
		minLength +
		' characters long. Try again.');

		return
		false;

		}

		// check for spaces

		if
		(document.myForm.password.value.indexOf(invalid)
		>
		-1)
		{

		alert("Sorry, 
		spaces are not allowed.");

		return
		false;

		}

		else
		{

		if
		(pw1
		!= 
		pw2)
		{

		alert
		("You 
		did not enter the same new password twice. Please re-enter your 
		password.");

		return
		false;

		}

		else
		{

		alert('Nice 
		job.');

		return
		true;

		      
		}

		   
		}

		}

		//  End -->

		</script>

		<form
		name=myForm
		onSubmit="return 
		validatePwd()">

		Enter your password twice.

		<br>

		(At least 6 characters, 12 characters 
		max, and spaces are not allowed.)

		<br>

		<pre>

		Password:        
		<input 
		type=password
		name=password
		maxlength=12>

		<br>

		Verify password: 
		<input 
		type=password
		name=password2
		maxlength=12>

		<br>

		</pre>

		<input
		type=submit
		value="Submit">

		</form>