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

Posted by Anderson rosa
Anderson rosa
10,864 Points

can't get to the next paragrath

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

list.addEventListener('click', function(e) { if (e.target.tagName == 'BUTTON') { let p = e.target.parentNode; let p1 = p.nextElementSibling; p1.className = "highlight";

} });

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

list.addEventListener('click', function(e) {
  if (e.target.tagName == 'BUTTON') {
    let p = e.target.parentNode;
    let p1 = p.nextElementSibling;
    p1.className = "highlight";



  }
});
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

Clayton Perszyk
MOD
Clayton Perszyk
Treehouse Moderator 48,850 Points
Clayton Perszyk
Clayton Perszyk
Treehouse Moderator 48,850 Points

Hey Anderson,

You want to just grab the button node, not it's parent. Once you have that, you want to grab the previous element, i.e. the preceding sibling paragraph. Then it should work!

Anderson rosa
Anderson rosa
10,864 Points
Anderson rosa
Anderson rosa
10,864 Points

Hey Clayton,

Thank you so much for taking the time to help me, your advice was very helpful.It help me to get the answer to my question. thanks again!