新建一个文件夹dome,
在文件下新建一个文件夹img 放入5张名称为1,2,3,4,5 格式为“.jpg”的图片文件。
在新建一个dome.html 文件 内容如下：
<html>
<head>
<meta charset="UTF-8"/>
<title></title>
<style type="text/css">
*{margin: 0padding: 0}
#a1{
width: 600px
height: 500px
border: 10px silver solid
animation:backgroundImg 5s infinite
-webkit-animation:backgroundImg 5s infinite
}
@keyframes backgroundImg{
0%{background-color: #0000FF}
25%{background-color: #0099FF}
50%{background-color: #00FFFF}
75%{background-color: #99FFFF}
100%{background-color: #FFFFFF}
}
@-webkit-keyframes backgroundImg{
0%{background-color: #0000FF}
25%{background-color: #0099FF}
50%{background-color: #00FFFF}
75%{background-color: #99FFFF}
100%{background-color: #FFFF00}
}
#backImg{
width: 500px
height: 490px
/*border: 5px red solid*/
margin-left:45px
z-index: 100
background-size:100% 100%
}
a:hover{
background-color:#0000FF
border: 5px springgreen solid
width: 20px
}
a{
display: block
z-index:
width: 30px
height: 30px
text-align: center
line-height: 30px
color: beige
font-weight: 300
border-radius:50%
font-size: 2em
background-color:#0099FF
position: absolute
top: 255px
box-shadow: none
}
#right{
left:580px
}
span{
display: block
width: 50px
height: 10px
background-color: #99FFFF
float: right
margin-left: 20px
position: relative
bottom: 50px
right: 100px
}
#show{
width: 200px
height: 100px
border: 1px red solid
position: absolute
bottom: 230px
right: 150px
background-size:100% 100%
}
</style>
</head>
<body>
<div id="a1">
<a id="left"><</a>
<a id="right">></a>
<div id="backImg"></div>
<div id="foot"></div>
</div>
<script type="text/javascript">
var div=document.getElementById("a1")
var backImg=document.getElementById("backImg")
var a_left=document.getElementById("left")
var a_right=document.getElementById("right")
var i=0
function backImage(){
i++
backImg.style.backgroundImage="url(img/" +i+".jpg)"
setTimeout(backImage,7000)
if(i>=5){
i=0
}
}
backImage()
a_left.onclick=function(){
i--
if(i<=0||i>5){
i=5
}
backImg.style.backgroundImage="url(img/" +i+".jpg)"
}
a_right.onclick=function(){
i++
if(i<=0||i>5){
i=1
}
backImg.style.backgroundImage="url(img/" +i+".jpg)"
}
for (var j = 0j <3j++) {
var span=document.createElement("span")
span.id="span_"+j
div.appendChild(span)
span.onmouseover=function(){
show(event)
}
}
function show(e) {
backImg.style.opacity="0.5"
var span = e.target
var div = document.createElement("div")
div.id = "show"
span.parentNode.appendChild(div)
console.log(span.id)
if(span.id=="span_2"){
i-=1
console.log(i)
if(i<=0||i>5){
i=5
}
div.style.backgroundImage="url(img/" +i+".jpg)"
}else if(span.id=="span_1"){
div.style.backgroundImage="url(img/" +i+".jpg)"
}else if(span.id=="span_0"){
i+=1
if(i<=0||i>5){
i=1
}
div.style.backgroundImage="url(img/" +i+".jpg)"
}
span.onmouseout = function() {
backImg.style.opacity="initial"
this.parentNode.removeChild(div)
}
span.onclick=function(){
backImg.style.backgroundImage="url(img/" +i+".jpg)"
}
}
</script>
</body>
</html>
<html><head>
<meta http-equiv="Content-Type" content="text/htmlcharset=utf-8">
<title>slider幻灯片 - 纯JS简化版</title>
<style type="text/css">
*{margin: 0padding: 0}
#sliderbox { width: 500height:313pxposition: relativeoverflow: hiddenmargin: 20px}
#slider {list-style: nonemargin: 0padding: 0}
#slider li {float:leftmargin: 0padding: 0}
#slidertab {position: absoluteright: 10pxbottom:10pxwidth: 80pxheight: 20pxlist-style: none}
#slidertab li {float: leftwidth: 20pxheight: 20pxmargin: 2pxbackground: #eeetext-align: centerline-height: 20pxfont-size: 12px}
#slidertab li.sliderclass {background: #f00}
</style>
<script type="text/javascript">
window.onload = function() {
var sliderbox = document.getElementById('sliderbox')
var slider = document.getElementById('slider')
var sliderli = slider.getElementsByTagName('li')
var slidertab = document.getElementById('slidertab')
var slidertabli = slidertab.getElementsByTagName('li')
var inow = 0
sliderbox.onmouseover = function() {
clearInterval(timer)
}
sliderbox.onmouseout =function() {
timer = setInterval(autoplay, 1000)
}
for(var i=0i<slidertabli.lengthi++) {
slidertabli[i].index = i
slidertabli[i].onclick = function() {
clearInterval(timer)
for(var a=0a<slidertabli.lengtha++) {
slidertabli[a].className = ""
sliderli[a].style.display = "none"
}
this.className = "sliderclass"
sliderli[this.index].style.display = "block"
inow = this.index
}
}
function autoplay() {
for(var i=0i<sliderli.lengthi++) {
sliderli[i].style.display = 'none'
slidertabli[i].className = ""
}
sliderli[inow].style.display = 'block'
slidertabli[inow].className = "sliderclass"
inow = inow==sliderli.length-1 ? 0 : inow+1
}
timer = setInterval(autoplay, 5000)
}
</script>
</head>
<body>
<div id="sliderbox">
<ul id="slider">
<li><img src="tab1.jpg" /></li>
<li><img src="tab2.jpg" /></li>
<li><img src="tab3.jpg" /></li>
</ul>
<ul id="slidertab">
<li>1</li>
<li>2</li>
<li>3</li>
</ul>
</div>
</body>
</html>
