PostalJS vs. jQuery custom events vs AmplifyJs

JavaScript performance comparison

Revision 111 of this test case created by RichardH


Testing the speeds of jQuery Custom Events with AmplifyJS and PostalJs

Preparation code

<!DOCTYPE html>
<script src="//"></script>
<script src="">
<script src=""></script>
<script src=""></script>
    var callback1 = function() {};
    var callback2 = function() {};
    var callback3 = function() {};
    var payload = {
        somekey: 'some value'
    var body;

    var channel =;

    // let's use jQuery.ready to make sure that the DOM is ready,
    // before trying to work with it
    jQuery(function() {
        // we'll use the body element to exchange messages for jQuery
        // if using deeper nested elements, jQuery will be slower, as custom events bubble
        body = $('body');

        // subscribe our callback1 function to the custom event for jQuery, only once
        body.bind('my-event', callback1);

        // subscribe our callback2 function to the message for PostalJs
        channel.subscribe('my-event', callback2)

        // Subscribe to Amplify
        amplify.subscribe('my-event', callback3);

Preparation code output

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Testing in unknown unknown
Test Ops/sec
jQuery - trigger
body.trigger('my-event', payload);
amplify.publish('my-event', payload);
channel.publish("my-event", payload);

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