js小效果：上移和下移！
Posted
tags:
篇首语：本文由小常识网(cha138.com)小编为大家整理，主要介绍了js小效果：上移和下移！相关的知识，希望对你有一定的参考价值。
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<script src="http://wangshixiong.vip/zp/move.js"></script>
<style type="text/css">
body {
background: #D9D1CB;
margin: 0;
}
ul, li {
list-style: none;
padding: 0;
margin: 0;
}
.box {
width: 1200px;
height: 800px;
margin: 0 auto;
position: relative;
background: url(http://cdn.attach.qdfuns.com/notes/pics/201701/20/195424zwu5vxeuw1xlzl25.jpg) no-repeat;
}
.content {
position: absolute;
width: 400px;
top: 200px;
left: 50px;
}
li {
height: 40px;
padding: 0 10px 0 10px;
margin-bottom: 6px;
background: #745857;
border-radius: 6px;
line-height: 40px;
position: relative;
}
.name {
float: left;
font-family: simhei;
color: white;
font-size: 18px;
}
.btn {
float: right;
display: inline-block;
}
.btn span {
text-align: center;
/*margin-top: 3px;*/
vertical-align: middle;
line-height: 30px;
margin-right: 6px;
display: inline-block;
border-radius: 6px;
background: #EFEEF4;
width: 50px;
height: 30px;
cursor: pointer;
border: 1px solid #1A222D;
}
.btn span:hover {
background: mediumpurple;
color: white;
}
</style>
</head>
<body>
<div class="box">
<ul class="content">
<li>
<span class="name">Happy New Year to yo</span>
<div class="btn">
<span>上移</span>
<span>下移</span>
</div>
</li>
<li>
<span class="name">Happy birthday to you!</span>
<div class="btn">
<span>上移</span>
<span>下移</span>
</div>
</li>
<li>
<span class="name">There was genuine joy</span>
<div class="btn">
<span>上移</span>
<span>下移</span>
</div>
</li>
<li>
<span class="name">happy cheerful glad</span>
<div class="btn">
<span>上移</span>
<span>下移</span>
</div>
</li>
<li>
<span class="name">a joyous family </span>
<div class="btn">
<span>上移</span>
<span>下移</span>
</div>
</li>
<li>
<span class="name">She is a happy girl. </span>
<div class="btn">
<span>上移</span>
<span>下移</span>
</div>
</li>
</ul>
</div>
</body>
<script type="text/javascript">
var ul = document.getElementsByTagName(‘ul‘)[0];
var lis = ul.children; //获取到所有的li
var tips = document.getElementsByClassName(‘tips‘);
for(var i = 0; i < lis.length; i++) {
var preMove = lis[i].children[1].children[0]; //上移按钮
var downMove = lis[i].children[1].children[1]; //下移按钮
//点击上移
preMove.onclick = function() {
var thisLi = this.parentElement.parentElement; //当前点击的li
var preLi = this.parentElement.parentElement.previousElementSibling; //当前点击的li的上一个
if(!preLi) { //当没有上一个元素时 停止运行
return;
} else {
move(thisLi, {top: -46}, 300, ‘linear‘, end)
move(preLi, {top: 46}, 300, ‘linear‘, end)
}
//调换位置
function end() {
thisLi.style.top = 0;
preLi.style.top = 0;
ul.insertBefore(thisLi, preLi);
}
};
//点击下移
downMove.onclick = function() {
var thisLi = this.parentElement.parentElement; //当前点击的li
var nextLi = this.parentElement.parentElement.nextElementSibling; //当前点击的li的下一个
if(!nextLi) { //当没有下一个元素时，停止
console.log(‘没有下一个了‘);
return;
} else {
move(thisLi, {top: 46}, 300, ‘linear‘, end)
move(nextLi, {top: -46}, 300, ‘linear‘, end)
}
//调换位置
function end() {
thisLi.style.top = 0;
nextLi.style.top = 0;
ul.insertBefore(nextLi,thisLi );
}
};
}
</script>
</html>
需要web前端课程工具和电子书，可以加群120342833
以上是关于js小效果：上移和下移！的主要内容，如果未能解决你的问题，请参考以下文章