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JavaScript JavaScript and the DOM (Retiring) Responding to User Interaction Adding an Event Listener

Chris McClantoc
Chris McClantoc
1,879 Points

Having trouble setting up the click button handler to change the background color.

I can't remember the code for this action.

var warning = document.getElementById("warning");
var button=document.getElementById('makeItRed')

<!DOCTYPE html>
        <title>Adding an Event Listener</title>
    <link rel="stylesheet" href="style.css" />
        <div id="warning">
            Warning: My background should be red!
        <button id="makeItRed">Make It Red!</button>
        <script src="app.js"></script>

1 Answer

You can change background color using the code below, hopefully this makes sense to you now after seeing it, but please let me know if you have any questions on it and I will be happy to explain further.

var warning = document.getElementById("warning");
var button = document.getElementById("makeItRed");

button.addEventListener("click", () => {
  warning.style.backgroundColor = "red";