How do I reference text input in if statement since there is not input field?

Question

Not sure how to proceed with the if statement

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.value == 0&&1&&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>

Answer 1 · 2017-11-18T10:07:31Z

November 18, 2017 10:07am

The variable "index" was assigned a few lines earlier with a "parseInt". So it is an ordinary number, not an element. That means it would not have a "value" property.

And you just need to compare it to the loop variable.

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Thomas Matic

Thomas Matic

How do I reference text input in if statement since there is not input field?

1 Answer

Steven Parker

Steven Parker