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| <!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>CSS隐藏和显示元素示例</title>
<style>
.hidden {
display: none;
}
.visible {
display: block;
}
button {
margin-top: 10px;
}
</style>
</head>
<body>
<div>这是一个始终显示的元素</div>
<div class="hidden">这是一个默认隐藏的元素</div>
<button onclick="toggleElement()">切换元素显示/隐藏</button>
<script>
function toggleElement() {
var element = document.querySelector('.hidden');
if (element.classList.contains('hidden')) {
element.classList.remove('hidden');
element.classList.add('visible');
} else {
element.classList.remove('visible');
element.classList.add('hidden');
}
}
</script>
</body>
</html>
|
