Category	Object	Returns	Example	Description
Ajax Requests	jQuery.ajax( settings )	XMLHttpRequest	jQuery.ajax( settings )	Perform an asynchronous HTTP (Ajax) request.
Ajax Events	.ajaxComplete( handler(event, XMLHttpRequest, ajaxOptions) )	jQuery	.ajaxComplete( handler(event, XMLHttpRequest, ajaxOptions) )	Register a handler to be called when Ajax requests complete. This is an Ajax Event.
Ajax Events	.ajaxError( handler(event, XMLHttpRequest, ajaxOptions, thrownError) )	jQuery	.ajaxError( handler(event, XMLHttpRequest, ajaxOptions, thrownError) )	Register a handler to be called when Ajax requests complete with an error. This is an Ajax Event.
Ajax Events	.ajaxSend( handler(event, XMLHttpRequest, ajaxOptions) )	jQuery	.ajaxSend( handler(event, XMLHttpRequest, ajaxOptions) )	...
Misc	jQuery.ajaxSetup( options )	-	jQuery.ajaxSetup( options )	Set default values for future Ajax requests.
Ajax Events	.ajaxStart( handler() )	jQuery	.ajaxStart( handler() )	Register a handler to be called when the first Ajax request begins. This is an Ajax Event.
Ajax Events	.ajaxStop( handler() )	jQuery	.ajaxStop( handler() )	Attach a function to be executed whenever all AJAX requests have ended. This is an Ajax Event
Ajax Events	.ajaxSuccess( handler(event, XMLHttpRequest, ajaxOptions) )	jQuery	.ajaxSuccess( handler(event, XMLHttpRequest, ajaxOptions) )	Attach a function to be executed whenever an AJAX request completes successfully. This is an Ajax Event
Ajax Requests	jQuery.get( url, [ data ], [ callback(data, textStatus, XMLHttpRequest) ], [ dataType ] )	XMLHttpRequest	jQuery.get( url, [ data ], [ callback(data, textStatus, XMLHttpRequest) ], [ dataType ] )	Load data from the server using a HTTP GET request.
Ajax Requests	jQuery.getJSON( url, [ data ], [ callback(data, textStatus) ] )	XMLHttpRequest	jQuery.getJSON( url, [ data ], [ callback(data, textStatus) ] )	Load JSON-encoded data from the server using a GET HTTP request.
Ajax Requests	jQuery.getScript( url, [ success(data, textStatus) ] )	XMLHttpRequest	jQuery.getScript( url, [ success(data, textStatus) ] )	Load a JavaScript file from the server using a GET HTTP request, then execute it.
Ajax Requests	.load( url, [ data ], [ success(responseText, textStatus, XMLHttpRequest) ] )	jQuery	.load( url, [ data ], [ success(responseText, textStatus, XMLHttpRequest) ] )	Load data from the server and place the returned HTML into the matched element.
Ajax Requests	jQuery.param( obj )	XMLHttpRequest	jQuery.param( obj )	Create a serialized representation of an array or object, suitable for use in a URL query string or Ajax request.
Ajax Requests	jQuery.param( obj, traditional )	XMLHttpRequest	jQuery.param( obj, traditional )	New 1.4 Create a serialized representation of an array or object, suitable for use in a URL query string or Ajax request.
Ajax Requests	jQuery.post( url, [ data ], [ success(data, textStatus) ], [ dataType ] )	XMLHttpRequest	jQuery.post( url, [ data ], [ success(data, textStatus) ], [ dataType ] )	Load data from the server using a HTTP POST request.
Misc	serialize( )	String	.serialize()	Encode a set of form elements as a string for submission.
Misc	.serializeArray()	Array	.serializeArray()	Encode a set of form elements as an array of names and values.