Why does this not work?

Question

Why can i not make the laws being cycled through in the if statement figure out if it is the correct index?

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 (law === index) {

           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>

Answer 1 · 2018-11-27T00:17:51Z

November 27, 2018 12:17am

You are comparing an element (node object) to an integer. This will always be false. There is an index though that can be used to identify the law. You are looping with it.

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Zak Mosbacher

Zak Mosbacher

Why does this not work?

1 Answer

KRIS NIKOLAISEN

KRIS NIKOLAISEN

Zak Mosbacher

Zak Mosbacher