Sometimes, we want to add a window.onload event handler with JavaScript.
In this article, we’ll look at how to add a window.onload event handler with JavaScript.
How to add a window.onload event handler with JavaScript?
To add a window.onload event handler with JavaScript, we call window.addEventListener.
For instance, we write
window.addEventListener("load", () => {
  //...
});
to call window.addEventListener with 'load' to add a load event handler.
Conclusion
To add a window.onload event handler with JavaScript, we call window.addEventListener.
