Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

JavaScript DOM Scripting By Example Editing and Filtering Names Fix DOM Manipulation Code

Posted by Mike John
Mike John
3,182 Points

What ' if ' condition should i put to make this code work..?

What ' if ' condition should i put to make this code work..?

app.js 
const laws = document.getElementsByTagName('li');
const indexText = document.getElementById('boldIndex');
const button = document.getElementById('embolden');

button.addEventListener('click', (e) => {
    const index = parseInt(indexText.value, 10);

    for (let i = 0; i < laws.length; i += 1) {
       let law = laws[i];

       // replace 'false' with a correct test condition on the line below
       if (boldIndex === laws ) {

           law.style.fontWeight = 'bold';
       } else {
           law.style.fontWeight = 'normal';
       }
    }
});
index.html 
<!DOCTYPE html>
<html>
<head>
  <title>Newton's Laws</title>
</head>
<body>
  <h1>Newton's Laws of Motion</h1>
  <ul>
    <li>An object in motion tends to stay in motion, unless acted on by an outside force.</li>
    <li>Acceleration is dependent on the forces acting upon an object and the mass of the object.</li>
    <li>For every action, there is an equal and opposite reaction.</li>
  </ul>
  <input type="text" id="boldIndex">
  <button id="embolden">Embolden</button>
  <script src="app.js"></script>
</body>
</html>

1 Answer

Tim Strand
Tim Strand
22,458 Points
Tim Strand
Tim Strand
22,458 Points

the number to match is entered in the indexText var. You are looping the lis and storing each into the law var. therefore compare the 2 vars.

if (indexText === law ) {
           law.style.fontWeight = 'bold';
       } else {
           law.style.fontWeight = 'normal';
       }
Mike John
Mike John
3,182 Points

Dear Tim, This still isn't working.?? Can u Recheck.?

Tim Strand
Tim Strand
22,458 Points
Tim Strand
Tim Strand
22,458 Points

my apologies i didnt look at the challenge first..

if(parseInt(indexText.value) === i)