<!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>Document</title>
<style>
* {
margin: 0;
padding: 0;
}
.left {
width: 95%;
}
.box1,
.box2,
.box3 {
width: 100%;
height: 500px;
border: 1px solid gray;
margin-bottom: 100px;
}
.left {
float: left;
}
.box1 {
background-color: antiquewhite;
}
.box2 {
background-color: aqua;
}
.box3 {
background-color: aquamarine;
}
.aside {
height: 200px;
width: 100%;
background-color: blue;
}
.right{
position: absolute;
right: 0px;
top: 400px;
width: 4.7%;
height: 400px;
}
.tu {
width: 100%;
height: 100px;
background-color: gray;
color: aliceblue;
display: none;
}
.bot{
height: 100px;
width: 100%;
background-color: pink;
}
</style>
</head>
<body>
<div class="left">
<div class="box1"></div>
<div class="box2"></div>
<div class="box3"></div>
</div>
<div class="right">
<div class="aside"></div>
<div class="tu">没想到吧</div>
<div class="bot"></div>
</div>
<script>
let right = document.querySelector(".right")
let tu=document.querySelector(".tu")
document.addEventListener("scroll", function () {
if (window.pageYOffset >= 300) {
right.style.position = "fixed"
right.style.top = "100px"
}
else {
right.style.position = "absolute"
right.style.top = "400px"
}
if(window.pageYOffset>=500){
tu.style.display="block"
}
else{
tu.style.display="none"
}
})
</script>
</body>
</html>
JS小练————实现侧边栏及粘滞定位效果
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转载自blog.csdn.net/m0_45293340/article/details/126556247
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