document ready javascript pure code example

Example 1: document ready without jquery

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

Example 2: document ready javascript vanilla

document.addEventListener("DOMContentLoaded", function() {
  // code
});

Example 3: document ready javascript

$(document).ready(function(){
  $("button").click(function(){
    $("p").slideToggle();
  });
});