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<!DOCTYPE html> <html> <body> <h1>Regular Function</h1> <p>The <strong>this</strong> keyword represents different objects depending on how the function was called.</p> <button id="btn">Click Me!</button> <p><strong>this</strong> represents:</p> <p id="demo"></p> <p>See the difference before and after the button is clicked.</p> <script> class Header { constructor() { this.color = "Red"; } changeColor = function() { document.getElementById("demo").innerHTML += this; } } const myheader = new Header(); //The window object calls the function: window.addEventListener("load", myheader.changeColor); //A button object calls the function: document.getElementById("btn").addEventListener("click", myheader.changeColor); </script> </body> </html>
