How to Reliably Handle jQuery Events Within ASP.NET UpdatePanels?

Handle Events in UpdatePanels with jQuery's $(document).ready

When working with elements within UpdatePanels using jQuery, relying solely on $(document).ready event binding can be insufficient. Upon partial page updates, these event handlers will no longer function within the updated area.

Recommended Approach

To address this, consider the following approach:

Initial Binding with $(document).ready:
Bind the event handlers to the relevant elements during the initial page load using $(document).ready.

Resubscription on Page Request Manager:
Subscribe to Microsoft's PageRequestManager's endRequest event. This event fires after partial page updates. Within the event handler, re-bind the jQuery event handlers to the now-updated elements.

This snippet demonstrates the approach:

$(document).ready(function() {
    // Initial binding
});

var prm = Sys.WebForms.PageRequestManager.getInstance();

prm.add_endRequest(function() {
    // Re-binding
});

Alternative Approach

Alternatively, consider using jQuery's .on() method, which is more efficient than resubscribing. However, carefully evaluate this approach to ensure it aligns with your specific requirements. Refer to the jQuery documentation for details on .on():

• https://api.jquery.com/on/

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