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JavaScript JavaScript and the DOM Getting a Handle on the DOM Select by ID

Barbara Vega
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Barbara Vega
Full Stack JavaScript Techdegree Student 19,486 Points

Can someone please let me know what I'm doing wrong for this step? I'm getting a type error. Thanks!

it's asking me to declare a variable and attach it to the button element by its ID.

The error is on line 3.

app.js
// Complete the challenge by writing JavaScript below

const button = document.getElementByID('btn-phrase');

button.addEventListener('click', () => {
  alert(input.value);
});
index.html
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <title>Phrase Sayer</title>
  </head>
  <body>
    <p><label for="input-phrase">Type a phrase</label></p>
    <p><input type="text" id="input-phrase"></p>
    <p><button id="btn-phrase">Say Phrase</button></p>
    <script src="app.js"></script>
  </body>
</html>

1 Answer

Brandon White
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Brandon White
Full Stack JavaScript Techdegree Graduate 35,771 Points

Hi Barbara Vega,

The issue you’re running into is really more of a syntax/spelling/capitalization error. In your getElementById element, your “d” should be lowercase. By capitalizing the “D” in “ID”, the proper method can’t be found.