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

not sure what's going on, it's not working on the website but when i paste it on vsCode it does 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 (index >= 0 && index <= 2) {

           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>

2 Answers

Brandon White
seal-mask
MOD
.a{fill-rule:evenodd;}techdegree seal-36
Brandon White
Treehouse Moderator

Hi Jonathan,

What your code seems to do is embolden every list element, but the challenge asks that you embolden the list element that position matches the number entered into the input text field. So if I am a user and I enter 1, then only the second list element should be emboldened. But your for loop cycles through all the list elements and as long as the number I enter in the input text field is between 0 and 2, it emboldens all of the list elements and not just the one I meant to target.

You'll want to change your test condition from (index >= 0 && index <= 2) to (index === i). Once you do that, you should be all set.

oh got it thanks so much !