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

Rasbin Rijal
PLUS
Rasbin Rijal
Courses Plus Student 4,940 Points
Posted by Rasbin Rijal
Rasbin Rijal
Courses Plus Student 4,940 Points

[ SOLVED ]JavaScript DOM Manipulation problem. I could not make it correct. Help needed!

What condition to put in the if statement to make this code work? I could not make it correct.

Any help!

Thanks, in advance

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 (false) {

           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

Steven Parker
Steven Parker
231,248 Points
Steven Parker
Steven Parker
231,248 Points

The provided code has already conveniently converted the user's selection to a number value and stored it in the variable "index" for you. So in the test, you need to determine if it is equal to the current value of the loop variable "i".