大图轮播js
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<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style>
* {
margin: 0px;
padding: 0px;
}
#stage {
width: 400px;
height: 40px;
border: 3px solid black;
margin: 100px;
overflow: hidden;
position: relative;
}
#banner {
width: 2400px;
height: 300px;
background-color: rosybrown;
}
.items {
width: 400px;
height: 40px;
color: white;
font-size: 25px;
text-align: center;
line-height: 300px;
float: left;
}
.btn-l,
.btn-r {
width: 50px;
height: 300px;
background-color: black;
opacity: 0.5;
color: white;
font-size: 40px;
line-height: 300px;
text-align: center;
position: absolute;
top: 0px;
}
.btn-l {
left: 0px;
}
.btn-r {
right: 0px;
}
.btn-l:hover,
.btn-r:hover {
cursor: pointer;
/*透明度*/
opacity: 0.2;
}
</style>
</head>
<body>
<div id="stage">
<div class="btn-l">
<</div>
<div class="btn-r">></div>
<div id="banner">
<div class="items" style="">平洋房产真实房源xxxx套</div>
<div class="items" style="">平阳房产真实在线交易xxxx套</div>
<div class="items" style="">平阳房产真实在线交易xxxx套</div>
<div class="items" style="">平阳房产真实在线交易xxxx套</div>
<div class="items" style="">平阳房产真实在线交易xxxx套</div>
<div class="items" style="">平洋房产真实房源xxxx套</div>
</div>
</div>
</body>
</html>
<script>
var btn_l = document.getElementsByClassName(‘btn-l‘)[0];
var btn_r = document.getElementsByClassName("btn-r")[0];
var banner = document.getElementById("banner");
var count = 1;
var arr = [];
btn_r.onclick = function() {
if(count < 6) {
count++;
arr.push(window.setInterval("move_left()", 20));
} else if(count == 6) {
count = 1;
banner.style.marginLeft = 0 + "px";
count++;
arr.push(window.setInterval("move_left()", 20));
}
}
btn_l.onclick = function() {
if(count > 1) {
count--;
arr.push(window.setInterval("move_right()", 20));
} else if(count = 1) {
count = 5;
banner.style.marginLeft = -2000 + "px";
count++;
arr.push(window.setInterval("move_left()", 20));
}
}
function move_left() {
if(banner.offsetLeft == (count - 1) * (-400)) {
clear();
} else {
banner.style.marginLeft = banner.offsetLeft - 20 + "px";
}
}
function move_right() {
if(banner.offsetLeft == (count - 1) * (-400)) {
clear();
} else {
banner.style.marginLeft = banner.offsetLeft + 20 + "px";
}
}
function clear() {
for(var x in arr) {
window.clearInterval(arr[x]);
}
}
//----------------------------- 分割线--------------------------------
</script>
<!--0 -500 -1000 -1500 x
1 0 2 3 4 n-->
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