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

Kelsey Donegan
Kelsey Donegan
3,342 Points
Posted by Kelsey Donegan
Kelsey Donegan
3,342 Points

What else am I supposed to change?

This code will embolden all 3 lis when 0,1, or 2 is entered, and not for any other number. However it can't single out an li. But the instructions just say to change the argument in the if statement, so I'm feeling lost on how to fix this.

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>

1 Answer

Joseph Yhu
.a{fill-rule:evenodd;}techdegree seal-36
Joseph Yhu
PHP Development Techdegree Graduate 48,637 Points

The value of the index variable should be equal to i for it to bolden the text with the appropriate index.

if (index == i) {

Kelsey Donegan
Kelsey Donegan
3,342 Points
Kelsey Donegan
Kelsey Donegan
3,342 Points

I feel so dumb. The thought had vaguely crossed my mind but I didn't think it would work and was trying other things. Thank you so much this was driving me crazy.