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

andres ponton
andres ponton
10,350 Points
Posted by andres ponton
andres ponton
10,350 Points

help with this challenge please

help with this previousElementSibiling

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

list.addEventListener('click', function(e){
  if (e.target.tagName == 'BUTTON') {
    var p=list.previousElementSibling;
    p.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>
Steven Parker
Steven Parker
231,271 Points
Steven Parker
Steven Parker
231,271 Points

This looks like a duplicate of your previous question. Didn't you resolve it using that last hint?

1 Answer

Emmanuel C
Emmanuel C
10,636 Points
Emmanuel C
Emmanuel C
10,636 Points

The e.target is the button element, so you can call the previousElementSibling on that in order to get that "p" element

list.addEventListener('click', function(e){
  if (e.target.tagName == 'BUTTON') {
    var button = e.target;
    var pElem = button.previousElementSibling;

    pElem.className = "highlight";
  }
});