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

Posted by Sai Kiran Sagaram
Sai Kiran Sagaram
3,688 Points

What is the method to solve this challenge? I'm stuck

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

list.addEventListener('click', function(e) { if (e.target.tagName == 'BUTTON') { let p = event.target.parentNode; let prevP = p.previousElementSibling; let li = p.parentNode; if(prevP) { ul.insertBefore(hightlight, prevP); } } });

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

list.addEventListener('click', function(e) {
  if (e.target.tagName == 'BUTTON') {
    let p = event.target.parentNode;
    let prevP = p.previousElementSibling;
    let li = p.parentNode;
    if(prevP) {
      ul.insertBefore(hightlight, prevP);
    }
  }
});
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

Alexandra Edwards
Alexandra Edwards
4,686 Points
Alexandra Edwards
Alexandra Edwards
4,686 Points

I got stuck on this one too. This was the solution I ended up using:

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

list.addEventListener('click', function(e) {
  if (e.target.tagName == 'BUTTON') {
      let p = e.target.previousElementSibling
      p.className = "highlight";
  }
});
Sai Kiran Sagaram
Sai Kiran Sagaram
3,688 Points

Thank you very much!