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

Abdul Azeez
Abdul Azeez
3,884 Points
Posted by Abdul Azeez
Abdul Azeez
3,884 Points

cant solve it

i dont know how to add the class

app.js 
const 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>
KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,971 Points

Select the element and use element.className = "name"

1 Answer

Clayton Perszyk
MOD
Clayton Perszyk
Treehouse Moderator 48,850 Points
Clayton Perszyk
Clayton Perszyk
Treehouse Moderator 48,850 Points
  1. event.target will get you the button element
  2. get the previous sibling element of the button element
  3. use .classname = "highlight" to add the class name