jQuery Ajax() method is used to send Ajax requests or asynchronous HTTP requests to the servers for fetching and posting data according to the requirement by specifying the request type.
Syntax:
$.ajax({name:value, name:value, ... })Parameters: The list of possible parameter that can be passed to an Ajax request are listed below:
- type: It is used to specify the type of the request as POST or GET.
- url: It is used to specify the URL to send the request to.
- username: It is used to specify a username to be used in an HTTP access authentication request.
- xhr: It is used for creating the XMLHttpRequest object.
- async: Its default value is true. It indicates whether the request should be handled asynchronously or not.
- beforeSend(xhr): It is a function that is to be run before the request is sent.
- dataType: The data type expected of the server response.
- error(xhr, status, error): It is used to run if the request fails.
- global: Its default value is true. It is used to specify whether or not to trigger global AJAX event handles for the request.
- ifModified: It’s default value is false. It is used to specify whether a request is only successful if the response has changed since the last request.
- jsonp: A string overriding the callback function in a jsonp request.
- jsonpCallback: It is used to specify a name for the callback function in a jsonp request.
- cache: It’s default value is true. It indicates whether the browser should cache the requested pages.
- complete(xhr, status): It is a function which is to be run when the request is being finished.
- contentType: It’s default value is: “application/x-www-form-urlencoded” and it is used when data send to the server.
- context: It is used to specify the “this” value for all AJAX related callback functions.
- data: It is used to specify data to be sent to the server.
- dataFilter(data, type): It is used to handle the raw response data of the XMLHttpRequest.
- password: It is used to specify a password to be used in an HTTP access authentication request.
- processData: It’s default value is true. It is used to specify whether or not data sent with the request should be transformed into a query string.
- scriptCharset: It is used to specify the charset for the request.
- success(result, status, xhr): It is to be run when the request succeeds.
- timeout: It is the local timeout for the request. It measured in terms of milliseconds.
- traditional: It is used to specify whether or not to use the traditional style of param serialization.
Example 1: This example use ajax() method to add the text content from outer text file by sending ajax request.
html
<!DOCTYPE html><html>
<head>
<title>
jQuery ajax() Method
</title>
<script src=
</script>
<script>
$(document).ready(function () {
$("li:parent").css("background-color", "green");
});
</script>
</head>
<body style="text-align:center;">
<h1 style="color:green">
GeeksForGeeks
</h1>
<h2>
jQuery ajax() Method
</h2>
<h3 id="h11"></h3>
<button>Click</button>
<!-- Script to use ajax() method to
add text content -->
<script>
$(document).ready(function () {
$("button").click(function () {
$.ajax({
url: "geeks.txt",
success: function (result) {
$("#h11").html(result);
}
});
});
});
</script>
</body>
</html>
|
geeks.txt
"hello geeks !"Output:
Example 2: This example illustrates the ajax() method in jQuery.
html
<!DOCTYPE html><html>
<head>
<title>jQuery ajax() Method</title>
<script src=
</script>
</head>
<body style="text-align: center;">
<h1 style="color: green;">
GeeksForGeeks
</h1>
<h2>jQuery ajax() Method</h2>
<h3 id="h11"></h3>
<button>Click</button>
<script>
$(document).ready(function () {
$("button").click(function () {
$.ajax({
url: "geeks.txt",
success: function (result) {
$("#h11").html(result);
},
error: function (xhr, status, error) {
console.log(error);
}
});
});
});
</script>
</body>
</html>
|
geeks.txt
GeeksforGeeks,
A Computer Science Portal for all Geeks.
Output:
jQuery is an open source JavaScript library that simplifies the interactions between an HTML/CSS document, It is widely famous with it’s philosophy of “Write less, do more”. You can learn jQuery from the ground up by following this jQuery Tutorial and jQuery Examples.