document on ready in js code example

Example 1: JavaScript that executes after page load

//two ways of executing JS code after page is loaded, use "DOMContentLoaded" when able

document.addEventListener("DOMContentLoaded", function(){
    //dom is fully loaded, but maybe waiting on images & css files
});

window.addEventListener("load", function(){
    //everything is fully loaded, don't use me if you can use DOMContentLoaded
});

Example 2: document .ready

// A document ready block with JQery.
$( document ).ready(function() {
    // we ready for fire action with JQery.
});


// A document ready block with javascript.
document.addEventListener("DOMContentLoaded", function(event) { 
  // we ready for fire action with javascript.
});