$(document).ready(function() means code example

Example 1: document ready without jquery

document.addEventListener("DOMContentLoaded", function(event) { 
  //we ready baby
});

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.
});