$.ajax() Performs an async AJAX request
$.ajaxPrefilter() Handle custom Ajax options or modify existing options before each request is sent and before they are processed by $.ajax()
$.ajaxSetup() Sets the default values for future AJAX requests
$.ajaxTransport() Creates an object that handles the actual transmission of Ajax data
$.get() Loads data from a server using an AJAX HTTP GET request
$.getJSON() Loads JSON-encoded data from a server using a HTTP GET request
$.parseJSON() Deprecated in version 3.0, use JSON.parse() instead. Takes a well-formed JSON string and returns the resulting JavaScript value
$.getScript() Loads (and executes) a JavaScript from a server using an AJAX HTTP GET request
$.param() Creates a serialized representation of an array or object (can be used as URL query string for AJAX requests)
$.post() Loads data from a server using an AJAX HTTP POST request
ajaxComplete() Specifies a function to run when the AJAX request completes
ajaxError() Specifies a function to run when the AJAX request completes with an error
ajaxSend() Specifies a function to run before the AJAX request is sent
ajaxStart() Specifies a function to run when the first AJAX request begins
ajaxStop() Specifies a function to run when all AJAX requests have completed
ajaxSuccess() Specifies a function to run when an AJAX request completes successfully
load() Loads data from a server and puts the returned data into the selected element
serialize() Encodes a set of form elements as a string for submission
serializeArray() Encodes a set of form elements as an array of names and values