Why is onclick not working?

Question

JavaScript

Changing the text color p to red on button click does not work.

in html:

<p class="intro">textext....text</p>
<a href="#" class="btn" id="btn">Двигаться к мечте!</a>

before the footer is the path to js: in css

<script src="js/main.js"></script>

.red {
    color: red;
}

in js:

var btn = document.getElementById('btn');

btn.onclick = function () {
  var text = document.querySelector('p.intro');
  text.classlist.add('red');
}

Answer 1

classList instead of classlist