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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
Posted by Wadzanai Mufunde
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
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");