The ajaxSend() method in jQuery is used to specify the function to be run when an AJAX request is about to send.
Syntax:
$(document).ajaxSend( function(event, xhr, options) )
Parameters:
This method accepts a single parameter function which is mandatory. The function accepts three parameters as mentioned above and described below:
- event: It holds the event object.
- xhr: It holds the XMLHttpRequest object.
- options: It holds the used options in AJAX requests.
The demo.txt file stored on server and it will load after clicking the change content button.
demo.txt:
This is GFG.
Example 1: This example changes the content of <p> element, by taking the data from server. When the AJAX request is ready to send, the page says AJAX request is about to send.
html <!DOCTYPE html> <html> <head> <script src= "https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"> </script> <!-- Script to use ajaxSend() method --> <script> $(document).ready(function () { $(document).ajaxSend(function () { alert("AJAX request is about to send"); }); $("button").click(function () { $("#paragraph").load("demo.txt"); }); }); </script> </head> <body style="text-align:center;"> <div id="div_content"> <h1 style="color: green;"> GeeksforGeeks </h1> <p id="paragraph" style="font-size: 20px;"> A computer science portal for geeks </p> </div> <button> Change Content </button> </body> </html> Output:
Example 2: This example changes the content of <h1> element, by taking the data from the server. When the AJAX request is ready to send, the page says AJAX request is about to send.
html <!DOCTYPE html> <html> <head> <script src= "https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"> </script> <!-- Script to use ajaxSend() method --> <script> $(document).ready(function () { $(document).ajaxSend(function () { alert("AJAX request is about to send"); }); $("button").click(function () { $("#heading").load("demo.txt"); }); }); </script> </head> <body style="text-align:center;"> <div id="div_content"> <h1 id="heading" style="color: green;"> GeeksforGeeks </h1> <p style="font-size: 20px;"> A computer science portal for geeks </p> </div> <button> Change Content </button> </body> </html> Output:
