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

Posted by Daniel Wagner
Daniel Wagner
13,389 Points

Why won't this code work for the sibling traversal code challenge?

A delegated click event listener has been attached to the selected ul element, which is stored in the variable list. The handler is targeting each button in the list. When any one of the buttons is clicked, a class of highlight should be added to the paragraph element immediately preceding that button inside the parent list item element. Add the code to create this behavior on line 5.

I don't understand why my code isn't working, What am I missing?

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

list.addEventListener('click', function(e) {
  if (e.target.tagName == 'BUTTON') {
    const foo = e.target.previousElementSibling
    foo.className = "hilight";
  }
});
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>

2 Answers

Daniel Wagner
Daniel Wagner
13,389 Points
Daniel Wagner
Daniel Wagner
13,389 Points

I misspelled highlight...... D'OH!

Mike Hickman
Mike Hickman
19,817 Points
Mike Hickman
Mike Hickman
19,817 Points

Haha. Everyone has been there! I've only done that about 300,317 times. Glad you got it fixed!

Jacob Perry
Jacob Perry
3,802 Points
Jacob Perry
Jacob Perry
3,802 Points

This question wasnt to complex, it just wasnt to direct. It said to do a, b, and c but just saying for you to do a and c. Ugh. Thanks for your help though! :)