JSFiddle - React, Tailwind, and code Playground

HTML

<a id='button'>Click for Width</a>

CSS

#button {
    color: red;
}

JavaScript

img = new image();

function image() {
    this.width = 400;
    this.height = 600;
    
    document.getElementById('button').onclick = function()
    {
        alert(this.width);
    };
}