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

Wadzanai Mufunde
PLUS
Wadzanai Mufunde
Courses Plus Student 9,174 Points

Javascript DOM

This is the question:

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.

What is it asking me to do? I don't understand the question.

js/app.js
let button;
let input;
//const button = document.getElementById('sayPhrase')
button.addEventListener('click', (button = 'sayPhrase') => {
  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

Steven Ang
Steven Ang
41,751 Points

The challenge has already initialised a variable named button which is on line 3. You just have to assign the value, in this case, it wants you to use the document.getElementById method to get a button with an ID of "sayPhrase".

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