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JavaScript JavaScript and the DOM (Retiring) Getting a Handle on the DOM Selecting by Id

Simon Peter Mulima
Simon Peter Mulima
2,655 Points
Posted by Simon Peter Mulima
Simon Peter Mulima
2,655 Points

prog wont work

How do I proceed from here?

js/app.js 
const button=document.getElementById("button");
let input;

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

4 Answers

Adam Pengh
Adam Pengh
29,881 Points
Adam Pengh
Adam Pengh
29,881 Points

You need to pass in the id to the function getElementById()

let button = document.getElementById('sayPhrase');
Brodey Newman
Brodey Newman
10,962 Points
Brodey Newman
Brodey Newman
10,962 Points

Hey Simon!

You're almost correct. You should select the button in your index.html with the ID of 'sayPhrase'. The code below should do the trick!

let button = document.getElementById('sayPhrase');

Hope this helps!

Mike Francois
Mike Francois
11,438 Points
Mike Francois
Mike Francois
11,438 Points

The actual element Id is "sayPhrase" not "button". Also you have to do the same for the input element.

hope this helps.

const button=document.getElementById("sayPhrase"); let input = document.getElementById("PhraseText");

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

Mike Francois
Mike Francois
11,438 Points
Mike Francois
Mike Francois
11,438 Points

This is a little clearer

<p>
const button=document.getElementById("sayPhrase");
let input = document.getElementById("PhraseText");

button.addEventListener('click', () => {
  alert(input);
});
</p>