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

Colin Sygiel
Colin Sygiel
5,249 Points
Posted by Colin Sygiel
Colin Sygiel
5,249 Points

I am having trouble with the first challenge. I am thinking they are asking to set a const by getting the element ID?

const button = document.getElementbyId("sayPhrase");
js/app.js 
const button = document.getElementbyId("sayPhrase");

let button;
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

andren
andren
28,558 Points
andren
andren
28,558 Points

Your code is mostly correct, but there is a typo in your id selector "getElementbyId". You have forgotten to capitalize the b in By.

Another issues is that right after you create the button const there is a let declaration that also creates a variable called button, this will cause issues so you have to remove that line.

The solution to the first task looks like this:

const button = document.getElementById("sayPhrase");

let input;

button.addEventListener('click', () => {
  alert(input.value);
});