Minimum Amount 2D Forms

minimum_amount_2d_forms.js

// copy and paste this code into your page source inside <script></script> tags
(function($){
	$(document).ready(attachEvent);
	function attachEvent(){
		minimum_amount         = 1; //update this
		$form                  = $('form#commerce_3'); //update this
		$overlay               = $('#overlay');
		$processing            = $('#processing');
		$custom_radio_button   = $('#frmItem_130_347'); //update this
		$custom_donation_input = $('#donation_value_103_347') //update this
		$form.one('submit', function(e){
			e.preventDefault();
			$overlay.hide();
			$processing.hide();
			if( $custom_radio_button.is(':checked') ){
				custom_donation = $custom_donation_input.val();
				custom_donation = parseInt(custom_donation);
				if( custom_donation != NaN && custom_donation >= minimum_amount ){
					$overlay.show();
					$processing.show();
					$form.submit();
				} else {
					$('#error_message').remove();
					$error_message = $('<div id="error_message" class="error">The minium amount is $'+minimum_amount+' USD</div>');
					$custom_donation_input.parent().after($error_message);
					attachEvent();
				}
			} else {
				$form.submit();
			}
		});
	}
})(jQuery);