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 arshia mohammadi
arshia mohammadi
7,657 Points

what is wrong with this code???!

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>

3 Answers

KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,967 Points

The code should be:

let button = document.getElementById("sayPhrase")

The first b (in button) is lowercase and the second b (in getElementById) is uppercase

KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,967 Points
KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,967 Points

Switch the case of the 2 B's in 

let Button = document.getElementbyId("sayPhrase")

and you are good.

arshia mohammadi
arshia mohammadi
7,657 Points

I'm sorry but i didn't understand what you mean!

arshia mohammadi
arshia mohammadi
7,657 Points
arshia mohammadi
arshia mohammadi
7,657 Points

Done , thanks a lot dude