Using JavaScript to Detect Asynchronous Postbacks in ASP.NET AJAX

Seeking advice on the JavaScript code required to determine if an asynchronous postback is in progress. Can anyone help with this?

Appreciate any assistance.

Answer №1

My final solution involved implementing the following code snippet to achieve the desired functionality:

Sys.WebForms.PageRequestManager.getInstance()._postBackSettings.async

Answer №2

Many popular libraries like jquery automatically set the X-Requested-With header to XMLHttpRequest, making it easy to test for in the request object. However, without knowing whether you are using msajax, jquery, or a custom script for xhr calls, it's difficult to provide specific advice. If you can provide more details, I can offer better guidance.

For additional information, you may find this resource helpful

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