js run function on page load 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: how to call a function as soon as a page loads javascript

<body onload="yourFunction()"> </body>

Example 3: javascript execute code on page load

<html>
 
  <body onload="loaded();"></body>
  <script>
    function loaded() {
      alert('Page is loaded');
    }
 
  </script>
 
</html>

Example 4: run on load js

function codeAddress() {
            alert('ok');
        }
window.onload = codeAddress;

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Html Example

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