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

Michael Enrique Betancourt Romero
Michael Enrique Betancourt Romero
3,637 Points
Posted by Michael Enrique Betancourt Romero
Michael Enrique Betancourt Romero
3,637 Points

i how can i do this thank you

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

list.addEventListener('click', function(e) { if (e.target.tagName == 'BUTTON') { e.target.tagName.nextSibling.style.backgroundColor = 'yellow'; } }); // try to get highlight a <p> of a list sibbling o f a button

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

list.addEventListener('click', function(e) {
  if (e.target.tagName == 'BUTTON') {
     e.target.tagName.nextSibling.style.backgroundColor = 'yellow'; 
  }
});
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

Steven Parker
Steven Parker
231,271 Points
Steven Parker
Steven Parker
231,271 Points

The challenge says " a class of highlight should be added to the paragraph element immediately preceding that button..." But this code:

  • has an extra propery name (tagName) in the identifier
  • is attempting to target the following element instead of the preceding one
  • is setting the background color instead of adding a class name