JavaScript JavaScript and the DOM Traversing the DOM Sibling Traversal

:) :((
:) :((
6,776 Points

Can someone resolve this challenge ?

I need some help i tried everything, i still didn't get it , i really need a example.

app.js
var list = document.getElementsByTagName('ul')[0];

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

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

1 Answer

Dimitar Dimitrov
Dimitar Dimitrov
10,298 Points

You can add the class using DOM traversal to select the previous sibling of the target button element.

e.target.previousSibling.classList.add('highlight')
:) :((
:) :((
6,776 Points

Thank youu :D