jQuery ajax() Method

jQuery ajax() method used to perform an asynchronous HTTP AJAX request.

Syntax

Here is a syntax for ajax() method

$(selector).ajax( url, options );
Parameter Type Description
url String Required. Specifies the URL to send the request to.
options Object Optional. A specifies one or more key value pairs for the AJAX request.

Syntax

Here is a syntax for ajax() method

$.ajax( {key: value, key: value, ... } );
Key Type Description
accepts Object A value indicating key value pairs that map a given dataType to its MIME type. Which Accept request header.
Default value is true
async Boolean A value indicating whether the request should be handled asynchronously or not.
beforeSend Function A pre-request callback function to run before the request is sent.
cache Boolean A value indicating whether whether the browser should cache the requested pages.
Default value is true
complete Boolean A callback function to run when the request is finished.
contentType Boolean
String		 Specifies content type, when sending data to the server.
Default value is application/x-www-form-urlencoded"
context Object Specifies the "this" value for all Ajax-related callback functions.
data Object
String
Array		 Specifies data to be sent to the server.
dataFilter Function A function to be used to handle the raw response data of XMLHttpRequest.
dataType String A function to be used to handle the raw response data of XMLHttpRequest.
error(jqXHR, textStatus, error) Function A callback function to run when the request is fails.
global Boolean A value specifying whether or not to trigger global AJAX event handles for the request.
Default value is true
headers Object An additional header key value pairs to send along with requests.
ifModified Boolean A value specifying whether a request to be successful if the response has changed since the last request.
jsonp String
Boolean		 Override the callback function name in a JSONP request.
jsonpCallback String
Function		 Specifies the callback function name for a jsonp request.
method String Specifies HTTP method to use for the request. for example "POST", "GET", "PUT".
Default value is GET.
mimeType String Specifies mime type to override the XHR mime type.
password String A password to be used with XMLHttpRequest in HTTP access authentication request.
processData String A value specifying whether or not data will be processed and transformed into a query string.
Default value is true
scriptCharset String Specifies the charset for the request, only applies when the "script" transport is used.
statusCode Object An object contains numeric HTTP codes and functions to be called when the response has the corresponding code.
success(data, textStatus, jqXHR) Function A callback function to be run when the request succeeds.
timeout Number Set a timeout in milliseconds for the request.
traditional Boolean A value specifies whether or not to use the traditional style of param serialization.
type String An alias for method. Specifies the type of request. For example GET, POST.
if you are using jQuery 1.9.0 to prior.
url String Specifies the URL to send the request to.
username String A username to be used with XMLHttpRequest in HTTP access authentication request.
xhr Function A callback function for creating the XMLHttpRequest object

Example

Here, in this example ajax() method call when click on button.

<!DOCTYPE html>
<html>
<head>
  <title>jQuery ajax() method</title>
  <script src="jquery-latest.min.js"></script>
  <script>
    $(document).ready(function(){
      $("button").click(function(){
        $.ajax({
          url: "ajaxfile.txt",
          success: function(result){
            $("div").html(result);
          }
        });
      });
    });
  </script>
</head>
<body>
  <div>This text replace with new contains</div>
  <button>Click here to call ajax() method</button>
</body>
</html>

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