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JavaScript Interacting with the DOM Responding to Events Adding an Event Listener

What other ways are there to select get a DOM element by its ID attribute?

app.js
var warning = document.getElementById("warning");
var button = doducment.getElementById("makeItRed");
index.html
<!DOCTYPE html>
<html>
    <head>
        <title>Adding an Event Listener</title>
    </head>
    <link rel="stylesheet" href="style.css" />
    <body>
        <div id="warning">
            Warning: My background should be red!
        </div>
        <button id="makeItRed">Make It Red!</button>
        <script src="app.js"></script>
    </body>
</html>

1 Answer

Julian Shadrin
Julian Shadrin
15,727 Points

An alternative to document.getElementById() is document.querySelector(); const warning = document.querySelector('#warning'); const button = document.querySelector('#makeItRed');

Steven Parker
Steven Parker
230,248 Points

When posting code, use Markdown formatting to preserve the code's appearance and retain special symbols.

Your examples with formatting:

const warning = document.querySelector('#warning');
const button = document.querySelector('#makeItRed');