JQuery - disable form inputs

$($('#submit_button').parents('form')[0]).find('input,select').each( function () {$(this).attr('disabled', false) });

Attach/add post parameters to form

Add/replace input tag(s) within the form:

function fn_copyFormInputs(sourceFormName, targetFormName, inputNames) {
    for(var i=0; i<inputNames.length; i++){
      $('#' + targetFormName + ' #' + inputNames[i]).remove();
      var value = $('#' + sourceFormName + ' #' + inputNames[i]).val();
      $('<input />').attr('type', 'hidden').attr('name', inputNames[i]).attr('id', inputNames[i]).attr('value', value).appendTo('#' + targetFormName);
    }}

Capture AJAX callbacks

$('#your_form').bind('ajax:error', function{ alert('Ajax failed!')} )

Get form input hash

var params = {}; $.each($('#your_form').serializeArray(), function(i, field) {params[field.name] = field.value;});

JQuery - UI

jQuery is a new kind of JavaScript Library.
jQuery is a fast and concise JavaScript Library that simplifies HTML document traversing, event handling, animating, and Ajax interactions for rapid web development. jQuery is designed to change the way that you write JavaScript.

http://jquery.com/