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JavaScript JavaScript and the DOM (Retiring) Traversing the DOM Sibling Traversal

I do not understand what this task is asking me to do, specifically what do they mean by add a class of highlight?

any help is appreciated!

const list = document.getElementsByTagName('ul')[0];

list.addEventListener('click', function(e) {
  if (e.target.tagName == 'BUTTON') {

<!DOCTYPE html>
        <title>JavaScript and the DOM</title>
    <link rel="stylesheet" href="style.css" />
            <h1>Making a Webpage Interactive</h1>
            <p>Things to Learn</p>
                <li><p>Element Selection</p><button>Highlight</button></li>
                <li><p>Event Listening</p><button>Highlight</button></li>
                <li><p>DOM Traversal</p><button>Highlight</button></li>
        <script src="app.js"></script>

4 Answers

Aaron Price
Aaron Price
5,974 Points

this worked for me

e.target.previousElementSibling.className = "highlight"

I would try e.target.className = 'highlight';

This adds "class = highlight" to each of those buttons, hopefully, I am correct.

Owa Aquino
Owa Aquino
19,277 Points

Hi Nick,

The problem stating that you should add a class of "highlight" on the paragraph <p> once the button was clicked. The "highlight" class can be added by the JS function classList.add('hightlight).

Hope this help.

Thanks guys, that was helpful. Aaron's solution worked for me too