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

Posted by Miguel Adan
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Miguel Adan
Front End Web Development Techdegree Student 2,621 Points

Im stuck! What do is it asking me to do.

So it's asking the following:

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.

But i really don't even understand what it wants me to do.

js/app.js 
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

Ross King
Ross King
20,704 Points
Ross King
Ross King
20,704 Points

The question is asking you to reference sayPhrase button to the button variable. You would do this so the button.AddEventListener knows which element to attach the event to.

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

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