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Kabolobari Benakole
Courses Plus Student 14,278 PointsI simply don't get it
It feels wrong to me...
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 === law) {
law.style.fontWeight = 'bold';
} else {
law.style.fontWeight = 'normal';
}
}
});
<!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>
2 Answers

Steven Parker
215,357 PointsGood intuition! You don't want to compare a number (index) with a list item element (law).
Just compare the selected index to the loop variable instead.

Kabolobari Benakole
Courses Plus Student 14,278 PointsInteresting, so it's gotta be if(index === i)...
? That's a little obfuscating right there. I didn't even thing that law
would be returning an li value/content for each li... Well, thanks for pointing me in the right direction.