It's age-old common sense to start manipulating the DOM only once it's ready and we can be certain all the elements are available, and in the post-jQuery days we're all using the DOMContentLoaded event for this.  Now web components (espec...
I have some JavaScript in the HEAD tag that dynamically inserts an asynchronously loading script tag before the last script on the page (that has been currently parsed). This dynamically included script tag contains JavaScript that needs to parse the...
In the newly released Safari 10.1 (macOS Sierra), the browser seems to fire the load events (document.DOMContentLoaded and window.load) before flexbox is done calculating widths and heights.  I have a script that calculates the height of an element i...
In the following document,  <!doctype html> <html>   <head>     <script language="javascript" src="example.js"></script>   </head>   <body>   </body> </html>   Where example.js is:...
I have a script on a page which is working most of the time but not always, and I'd like to know why.  This script is imported via:  <script src="script.js" async></script>` tag in `<head>   And the content of the script...
I'm trying to play with TensorFlow.js's tf.browser.fromPixels() function. Unfortunately, I get the following error:  backend_webgl.ts:309 Uncaught Error: The DOM is not ready yet. Please call tf.browser.fromPixels() once the DOM is ready. One...
I wanted to create a thank you page that displays when someone starts downloading a file. The script I have works, but it only starts the download AFTER the page has finished loading which could take awhile. I have tried DOMContentLoaded but it doesn...
I'm trying to catch each page load on https://forum.vivaldi.net  //==UserScript== //@include https://forum.vivaldi.net/* //==/UserScript== (function () {     window.addEventListener('DOMContentLoaded', function () {         alert('A n...
DOMContentLoaded fires after document is loaded and its scripts ran, and I'd like to run my code before scripts were executed but after document.body.outerHTML ( document.childNodes[document.childNodes.length-1].outerHTML ) is full  I try this, b...
What is the correct JavaScript way to replacement <body onload="init();">, bearing in mind that we no-longer have need to support very old browsers.  In my case I want to add a onClick event to all  tags and would like to keep the Javas...

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