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5.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Screen Readers</title>
<link rel="stylesheet" href="../css/style.css" />
<style>
@media(prefers-color-scheme: dark) {
.main {
background-color: black;
color: white;
}
}
@media(prefers-color-scheme: light) {
.main {
background-color: white;
color: black;
}
}
.main.light {
background-color: white;
color: black;
}
.main.dark {
background-color: black;
color: white;
}
</style>
</head>
<body class="main">
<header>
<ul>
<li><a href="../visual-considerations/index.html">← back</a></li>
</ul>
</header>
<div id="container">
<h1>Exercise 5</h1>
<p>
For this exercise, read the user's dark/light mode preference and set
the background to either black or white. For extra credit, allow the
checkbox below to override that setting!
</p>
<label>
Enable Dark Mode
<input type="checkbox" id="themeToggle"/>
</label>
</div>
<script>
let body = document.querySelector("body");
let systemDarkMode = window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches;
let classes = body.classList;
let themeToggle = document.querySelector("#themeToggle");
themeToggle.addEventListener("click", toggleBodyDarkMode);
function toggleBodyDarkMode() {
console.log("hjhj");
if (systemDarkMode) {
classes.toggle("light");
} else {
classes.toggle("dark");
}
}
</script>
</body>
</html>