document ready without jquery

// A $( document ).ready() block.
$( document ).ready(function() {
    console.log( "ready!" );
});

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

document.addEventListener("DOMContentLoaded", function(event) { 
  //do work
});

$(function() {
  // Handler for .ready() called.
});