js新手图片切换,样式好看,功能强大,代码简单(用新手能懂得方式写的)
大概就是这个样式,挺完美的,很我尽量用最简单的方法写的,因为我也是新手,哈哈,如果你要用加上自己的图片就好了。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>js轮播图</title>
<style type="text/css">
*{
margin: 0;
padding: 0;
}
#content-1{
position: relative;
width: 70%;
height: 600px;
background: red;
left: 300px;
}
.ul-1{
width: 100%;
height: 600px;
position: relative;
list-style: none;
}
.li-1{
width: 100%;
height: 100%;
position: absolute;
color: white;
font-size: 70px;
opacity: 0;
transition: all .5s;
}
.li-1:nth-child(1){
background: rgb(251, 255, 3);
}
.li-1:nth-child(2){
background: rgb(7, 242, 250);
}
.li-1:nth-child(3){
background:palevioletred;
}
.li-1:nth-child(4){
background:rgb(243, 6, 85);
}
.li-1:nth-child(5){
background:rgb(9, 247, 68);
}
.button_big{
width: 40px;
height: 80px;
background: white;
font-size: 30px;
position: absolute;
top: 250px;
border: 0;
z-index: 999;
}
#btn-pre{
left: 20px;
}
#btn-next{
right: 20px;
}
.li-1.active{
z-index: 888;
opacity:1;
}
/*五个圆圈*/
#ul-2{
position: absolute;
top:80%;
left: 36%;
z-index: 1000;
list-style: none;
}
.circle{
width: 12px;
height: 12px;
margin-left: 20px;
float: left;
border: 3px solid white;
border-radius: 100%;
background: rgb(112, 110, 111);
cursor: pointer;
}
.circle.styles{
background: white;
}
</style>
</head>
<body>
<div id="content-1">
<ul class="ul-1"><!--图片区域-->
<li class="li-1 active" >0</li>
<li class="li-1" >1</li>
<li class="li-1" >2</li>
<li class="li-1" >3</li>
<li class="li-1" >4</li>
</ul>
<button type="button" class="button_big" id="btn-pre"><</button>
<button type="button" class="button_big" id="btn-next">></button>
<ul id="ul-2"><!--小圈圈区域-->
<li class="circle styles" data-index="0"></li>
<li class="circle" data-index="1"></li>
<li class="circle" data-index="2"></li>
<li class="circle" data-index="3"></li>
<li class="circle" data-index="4"></li>
</ul>
</div>
<script type="text/javascript">
var li = document.getElementsByClassName("li-1");//图片
var pre = document.getElementById("btn-pre");//按钮
var next = document.getElementById("btn-next");
var circles = document.getElementsByClassName("circle");//获取圆圈
var index = 0;
//清空样式
function clearli(){
for(var i = 0;i<li.length;i++){
li[i].className = "li-1";
circles[i].className = "circle";
}
}
//添加样式
function goindex(){
clearli();
li[index].className = "li-1 active";
circles[index].className = "circle styles";
}
//返回上一张图片
function gopre(){
if(index==0){
index=4;
}
else{
index--;
}
goindex();
}
//加click事件,执行gopre函数
pre.addEventListener("click",function(){
gopre();
})
//进入下一张图片
function gonext(){
if(index==4){
index=0;
}
else{
index++;
}
goindex();
}
//加click事件,执行gonext函数
next.addEventListener("click",function(){
gonext();
})
//小圆圈的样式和图片切换
for(a=0;a<circles.length;a++){
circles[a].addEventListener("click",function(){
var data_index = this.getAttribute("data-index");
index = data_index;
goindex();
})
}
</script>
</body>
</html>