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

Matt Davis
Matt Davis
13,372 Points
Posted by Matt Davis
Matt Davis
13,372 Points

how to target previous elements

one or more of the buttons aren't targeting previous P tag.

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

list.addEventListener('click', function(e) {
  if (e.target.tagName == 'BUTTON') { 
    let button = e.target
    let before = button.previousElementSibling;
    before.classList.add("hightlight")


  }
});
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

KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,971 Points

You have a typo: It it "highlight". You have "hightlight"