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本文實例為大家分享了JS輪播圖的具體代碼，供大家參考，具體內容如下
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title></title>
<link rel="stylesheet" href="css/reset.css" rel="external nofollow" />
<style>
.jiantou {
height: 36px;
width: 24px;
line-height: 36px;
text-align: center;
background-color: rgba(0, 0, 0, .3);
font-size: 14px;
color: #fff;
position: absolute;
top: 0;
bottom: 0;
margin: auto 0;
display: none;
z-index: 99999;
cursor: pointer;
}
.left {
left: 0;
}
.right {
right: 0;
}
ul li {
height: 20px;
width: 20px;
background-color: #B7B7B7;
float: left;
border-radius: 50%;
margin: 2px;
}
ul {
position: absolute;
bottom: 15px;
margin: 0 auto;
background-color: rgba(255, 255, 255, .3);
border-radius: 10px;
left: 300px;
z-index: 9999;
cursor: pointer;
}
.on {
background-color: #F40;
}
img {
width: 790px;
height: 340px;
position: absolute;
opacity: 0;
/*transition: all 2s;*/
/*transition: all 0.5s;*/ /*時間給短一些*/
transition: opacity 0.5s; /*不要寫all 那么就不會影響到z-index*/
z-index: 0;
}
.in {
width: 790px;
height: 340px;
}
#out {
width: 790px;
height: 340px;
margin: 100px auto;
position: relative;
}
#out:hover .jiantou {
display: block;
}
</style>
</head>
<body>
<div id="out">
<div class="in">
<img src="img/j1.jpg" alt="" />
<img src="img/j2.jpg" alt=""/>
<img src="img/j3.jpg" alt=""/>
<img src="img/j4.jpg" alt=""/>
<img src="img/j5.jpg" alt=""/>
<img src="img/j6.jpg" alt=""/>
<img src="img/j7.jpg" alt=""/>
<img src="img/j8.jpg" alt=""/>
</div>
<div class="left jiantou"><</div>
<div class="right jiantou">></div>
<ul class="clearFix">
<li class="on"></li>
<li class="on"></li>
<li class="on"></li>
<li class="on"></li>
<li class="on"></li>
<li class="on"></li>
<li class="on"></li>
<li class="on"></li>
</ul>
</div>
<script>
var out = document.getElementById("out");
var img = document.images;
var left = document.getElementsByClassName("left").item(0);
var right = document.getElementsByClassName("right").item(0);
var lilist = document.getElementsByTagName("li");
var index = 0;//標識哪張圖片正在出現
var timer = null;
var timer1 = null;
right.onclick = function () {
//把所有人的opacity置為0
/*for (var i = 0; i < img.length; i++) {
img[i].style.opacity = 0;
}*/
img[index].style.opacity = 0;
img[index].style.zIndex = 0;
lilist[index].className = '';
// index++;
index == 7 ? index = 0 : index++;
lilist[index].className = 'on';
img[index].style.opacity = 1;
img[index].style.zIndex = 1;
};
left.onclick = function () {
img[index].style.opacity = 0;
lilist[index].className = '';
img[index].style.zIndex = 0;
// index--;
index == 0 ? index = 7 : index--;
lilist[index].className = 'on';
img[index].style.opacity = 1;
img[index].style.zIndex = 1;
};
for (var i = 0; i < lilist.length; i++) {
lilist[i].value = i;
lilist[i].onmouseover = function () {
var that = this;
timer=setTimeout(function () {
img[index].style.opacity = 0;
lilist[index].className = '';
img[index].style.zIndex = 0;
index = that.value;
lilist[index].className = 'on';
img[index].style.opacity = 1;
img[index].style.zIndex = 1;
},300)
};
lilist[i].onmouseout = function () {
clearTimeout(timer);
}
}
out.onclick = function (e) {
console.log(e.target);
};
timer1 = setInterval(right.onclick,2000);
out.onmouseover = function () {
clearInterval(timer1);
};
out.onmouseout = function () {
timer1 = setInterval(right.onclick, 2000);
};
var num =5
var arr = [];
var img =document.images;
for(var i=0;i<img.length;i++){
if(i<5){
arr.push(img[i].offsetHeight);
}else {
img[i].style.position='abl'
}
}
</script>
</body>
</html>
以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持億速云。
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