How to Efficiently Handle Multiple AJAX Requests and Maintain Server and Browser Performance?

Sequencing AJAX Requests

Managing multiple AJAX requests efficiently is crucial to prevent overwhelming the server and compromising browser responsiveness. This problem arises when iterating over a collection and calling AJAX for each item, requiring each request to complete before proceeding.

Solutions:

jQuery 1.5 :

• $.ajaxQueue() Plugin: This plugin combines Promises, queues, and AJAX to manage requests and returns a promise that resolves upon request completion.

jQuery 1.4:

• Animation Queue Adaptation: Utilize the animation queue of an empty jQuery object to create a "queue" for AJAX requests.
• $.ajaxQueue() Plugin: Implement your own plugin that uses the 'fx' queue to automatically start the first request.

Usage Example:

We aim to copy list items from

to
, using AJAX:

$("#items li").each(function(idx) {
    $.ajaxQueue({
        url: '/echo/html/',
        data: {html : "["+idx+"] "+$(this).html()},
        type: 'POST',
        success: function(data) {
            $("#output").append($("<li>", { html: data }));
        }
    });
});

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This ensures that requests are executed sequentially, preserving server stability and browser responsiveness.

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