Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

JavaScript JavaScript and the DOM (Retiring) Getting a Handle on the DOM Select All Elements of a Particular Type

Posted by Winnie Kelley
Winnie Kelley
13,988 Points

.addEventListener error after pressing button to change colour.

I have the same code as the video, the page will load up on preview. However, when I put in a colour and try and press the button. the error of "Cannot read property 'addEventListener' of null" will be displayed in the console.

const myHeading = document.getElementById('myHeading'); const myButton = document.getElementById('myButton'); const myTextInput = document.getElementById('myTextInput');

myButton.addEventListener("click", () => { myHeading.style.color = myInputText.value; });

1 Answer

KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,971 Points

I received a different error

Uncaught ReferenceError: myInputText is not defined
    at HTMLButtonElement.<anonymous> (app.js:14)

This is because you declare myTextInput but then in your event listener use myInputText

Winnie Kelley
Winnie Kelley
13,988 Points

Thank you