"JavaScript and the DOM (Retiring)" was retired on February 12, 2022. You are now viewing the recommended replacement.

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 Selecting by Id

Posted by Thomas Barkel
Thomas Barkel
Courses Plus Student 7,222 Points

Stumped on Code Challenge. getElementbyId

I can't figure out why this is not the correct answer, the code challenge is:

"There is a variable named button in app.js. Set its value to contain a reference to the button element in index.html with the ID of sayPhrase."

js/app.js 
let button = document.getElementbyId('sayPhrase');
let input;


button.addEventListener('click', () => {
  alert(input.value);
});
index.html 
<!DOCTYPE html>
<html>
  <head>
    <title>Phrase Sayer</title>
  </head>
  <body>
    <p><input type="text" id="phraseText"></p>
    <p><button id="sayPhrase">Say Phrase</button></p>
    <script src="js/app.js"></script>
  </body>
</html>

1 Answer

Adam Beer
Adam Beer
11,314 Points

Hi Thomas! Just a typo. Inside the getElementById the "B" letter is started to uppercase .