<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>全屏滚动</title>
<link rel="stylesheet" href="./main.css" />
</head>
<body>
<nav>
<div class="nav_item" data-index="0">导航1</div>
<div class="nav_item" data-index="1">导航2</div>
<div class="nav_item" data-index="2">导航3</div>
<div class="nav_item" data-index="3">导航4</div>
<div class="nav_item" data-index="4">导航5</div>
</nav>
<main>
<div class="content">内容1</div>
<div class="content">内容2</div>
<div class="content">内容3</div>
<div class="content">内容4</div>
<div class="content">内容5</div>
</main>
<script>
let $nav = document.querySelector("nav");
let $main = document.querySelector("main");
let currIndex = 0;
$nav.children[currIndex].classList.add("active");
$nav.addEventListener("click", function (e) {
this.children[currIndex].classList.remove("active");
e.target.classList.add("active");
currIndex = e.target.dataset.index;
// main移动，overflow让body来做
$main.style.transform = `translateY(-${currIndex * 100}%)`;
});
</script>
</body>
</html>
html,
body {
margin: 0;
padding: 0;
width: 100%;
height: 100%;
overflow: hidden;
}
nav {
position: fixed;
bottom: 0;
display: flex;
align-items: center;
width: 100%;
z-index: 2;
}
.nav_item {
position: relative;
flex: 1;
line-height: 40px;
text-align: center;
background-color: #f55;
font-size: 24px;
color: #fff;
}
.nav_item:hover {
background-color: rgba(85, 85, 255, 0.5);
}
.nav_item::after {
content: "";
position: absolute;
top: 0;
left: 50%;
-webkit-transform: translate(-50%, -100%);
transform: translate(-50%, -100%);
border: 20px solid transparent;
border-bottom-color: #55f;
display: none;
}
.nav_item.active {
background-color: #55f;
}
.nav_item.active::after {
display: inline-block;
}
main {
height: 100%;
transition: all 0.5s;
}
.content {
height: 100%;
display: flex;
justify-content: center;
align-items: center;
font-size: 100px;
}
