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

Posted by furkan
furkan
11,733 Points

Returns error after completing the task

IFor the first task that asks to give value to the button element on the app.js, I did the following:

'''javascript

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

'''

However following error is returned:

There was an error with your code: TypeError: 'undefined' is not a function (evaluating 'button.addEventListener('click', function () { alert(input.value); })')

Any advice..?

js/app.js 
let button = document.getElementById=('sayPhrase');
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

Steven Parker
Steven Parker
231,271 Points
Steven Parker
Steven Parker
231,271 Points

You have a syntax error caused by a stray equal sign ("=") between the method name "getElementById" and the parentheses enclosing the argument.

furkan
furkan
11,733 Points

Oh of course! I should avoid the equals sign when dictating what element id to choose. Thank-you for that. Gosh, I don't know how I missed that haha.