how do i select previousElement Sibling

Question

gf

app.js

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

list.addEventListener('click', function(e) {
   for (let i= 0;i<list.length;i+=1){
  if (e.target.tagName == 'BUTTON') {

    let p= e.target.previousElementSibling;
    p.className='hightlight';

  }
  }
});

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>

Answer 1 · 2019-08-31T08:37:07Z

August 31, 2019 8:37am

You are selecting the correct previous element sibling. However there is no need for a for loop. Your event listener covers the entire ul. You also have a typo in the class name. It should be 'highlight' not 'hightlight'

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Yudi Bakshi

Yudi Bakshi

how do i select previousElement Sibling

1 Answer

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