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

Posted by John Smith
John Smith
111 Points

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
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
231,172 Points
Steven Parker
Steven Parker
231,172 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');