Categories: jQuery

jQuery AJAX Methods

AJAX is an acronym standing for Asynchronous JavaScript and XML that is the art of exchanging data with a server without a browser page refresh.

jQuery is a great tool that provides a set of AJAX methods to develop the next generation of web application. This jQuery method is mostly used for requests where the other methods cannot be used.

Syntax:

$.ajax({name:value, name:value, ... })

Simple example:

$.ajax({
url: "ajax.php",
context: document.body
}).done(function() {
console.log('Done..');
});

$.ajax({
type:'GET',
url:'index.php',
dataType:'json',
data:"gender=male&age=25",
success:function(data){
console.log('Success..');
}
})

Here are possible names/values:

Name	Value
async	A Boolean value indicating whether the request should be handled asynchronous or not. Default is true
cache	A Boolean value indicating whether the browser should cache the requested pages. Default is true
beforeSend(xhr)	A function to run before the request is sent
contentType	The content type used when sending data to the server. Default is: “application/x-www-form-urlencoded”
complete(xhr,status)	A function to run when the request is finished (after success and error functions)
data	Specifies data to be sent to the server
context	Specifies the “this” value for all AJAX related callback functions
dataType	The data type expected of the server response.
dataFilter(data,type)	A function used to handle the raw response data of the XMLHttpRequest
global	A Boolean value specifying whether or not to trigger global AJAX event handles for the request. Default is true
error(xhr,status,error)	A function to run if the request fails.
jsonp	A string overriding the callback function in a jsonp request
ifModified	A Boolean value specifying whether a request is only successful if the response has changed since the last request. Default is: false.
password	Specifies a password to be used in an HTTP access authentication request.
jsonpCallback	Specifies a name for the callback function in a jsonp request
scriptCharset	Specifies the charset for the request
processData	A Boolean value specifying whether or not data sent with the request should be transformed into a query string. Default is true
timeout	The local timeout (in milliseconds) for the request
success(result,status,xhr)	A function to be run when the request succeeds
type	Specifies the type of request. (GET or POST)
traditional	A Boolean value specifying whether or not to use the traditional style of param serialization
xhr	A function used for creating the XMLHttpRequest object
username	Specifies a username to be used in an HTTP access authentication request
url	Specifies the URL to send the request to. Default is the current page