Interested in obtaining all the code that is triggered when DOMContentLoaded event is fired or jQuery's $(document).ready() function?
I am looking to improve my website's performance, and after running a speed test, I discovered that 2 seconds of the page's loading time is dedicated to processing events during DOMContentLoaded.
If you're looking to improve performance, I suggest using the Chrome profiler tool:
Here is a suggestion for you to try:
console.log($(document).data("events").ready);
Referencing a technique mentioned by John Resig in his post found at:
Additionally, you may want to explore the listHandlers plugin.
If other methods do not work, consider temporarily modifying the core jQuery file with this snippet:
ready: function( fn ) {
//create a wrapper function allowing debugger access
var fn2 = function() {
var args = [].slice.call(arguments);
debugger; // <-- initiate debugging for each handler
return fn.apply(this, args);
}
// Attach event listeners
jQuery.bindReady();
// Include the callback
readyList.add( fn2 );
return this;
},
The Chrome Developer Tools documentation mentions that the Network Panel info states that DomContentLoaded event is triggered when the blue line appears. It's worth noting that the load event occurs once the red line appears.
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