validate box for credit card number

[crosemffet]

hello everybody, and thanks in advance for your support.
I need to validate one credit card number (luhn algorithm).
I want to use validatebox component.
any help will be appreciated,
regards, and merry christmas..!.

[jarry]

You can extend the 'creditcard' validating type and apply it to a inputing box.

Code:

<script type="text/javascript">
	$.extend($.fn.validatebox.defaults.rules, {
		creditcard: {
			validator: function(value,param){
				if ( /[^0-9 \-]+/.test( value ) ) {
					return false;
				}
				value = value.replace( /\D/g, "" );
				if ( value.length < 13 || value.length > 19 ) {
					return false;
				}
				var nCheck = 0,
					nDigit = 0,
					bEven = false,
					n, cDigit;
				for ( n = value.length - 1; n >= 0; n-- ) {
					cDigit = value.charAt( n );
					nDigit = parseInt( cDigit, 10 );
					if ( bEven ) {
						if ( ( nDigit *= 2 ) > 9 ) {
							nDigit -= 9;
						}
					}

					nCheck += nDigit;
					bEven = !bEven;
				}
				return ( nCheck % 10 ) === 0;
			},
			message: 'Please enter a valid credit card number.'
		}
	})
</script>
<input class="easyui-textbox" validType="creditcard">