Nowadays JavaScript has three different keywords to declare a variable — var, let and, const. Each has its own properties and particularities. Let’s start by making a simple comparison table ...

CSS Variables with JavaScript This project demonstrates how to use CSS variables in conjunction with JavaScript to dynamically update the styling of a webpage. The project includes a simple interface ...

The image probably isn't loaded by that time. I mean, it's probably a couple milliseconds, if that, between when you assign that src and when you ask for the width and height.