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

hwat shell i do here ..... i cand figure it out!

so what shell i do here ?

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 (true) {

           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

Gergely Bocz
Gergely Bocz
14,217 Points

Hi Alexandru!

There are 3 laws as list items. As you can see in the preview, there is an input field, where you can type whatever you want. The goal is to embolden the list items according to your input. If your input is 0, then the first list item gets emboldened, if the input is 1, then the second list item, and if it's 2, then the third list item. You just have to pair the value of the input field to the list item indexes. Try to figure out what variable keeps track of each of those and then match them with an = sign inside the if.

Good luck!