javascript on ready without jquery code example

Example 1: document ready without jquery

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

Example 2: javascript wait for document load

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

Example 3: jquery on ready

$(function() {
    console.log( "ready!" );
});