如题，我们将实现这一效果。
首先是html5的部分：
<!DOCTYPE html> <html> <head> <title></title> <meta charset="utf-8"> <link rel="stylesheet" type="text/css" href="CSS/CarouselFigure.css"> <script type="text/javascript" src="js/CarouselFigure.js"></script> </head> <body> <div id="figure_div"> <img id="img" src="p_w_picpaths/2.jpg"> <div id="dots_div"> <li id="dot1" onmouseover="myChangePicture(1)"></li> <li id="dot2" onmouseover="myChangePicture(2)"></li> <li id="dot3" onmouseover="myChangePicture(3)"></li> <li id="dot4" onmouseover="myChangePicture(4)"></li> </div> </div> </body> </html>
然后我们写一个简单的CSS，使得hover时改变圆点的背景颜色。
*
{
margin: 0px;
padding: 0px;
}
div#figure_div
{
position: relative;
width: 800px;
height: 500px;
}
div#dots_div
{
position: absolute;
/* width: 100px;*/
height: 20px;
left: 352px;
bottom: 10px;
}
div#figure_div li
{
width: 16px;
height: 16px;
border: 1px solid #666;
display: inline-block;
border-radius: 8px;
}
div#figure_div li:hover
{
background-color: #EAEA06;
}
div#figure_div img
{
width: 800px;
height: 500px;
float: left;
}然后就是js的部分了，我们用js实现自动播放和鼠标划过li时切换图片。
var now_number;
function myChangePicture(picture_number)
{
switch(picture_number)
{
case 1:
document.getElementById("img").src="p_w_picpaths/2.jpg";
now_number=1;
document.getElementById("dot1").style.backgroundColor='#EAEA06';
document.getElementById("dot2").style.backgroundColor='';
document.getElementById("dot3").style.backgroundColor='';
document.getElementById("dot4").style.backgroundColor='';
break;
case 2:
document.getElementById("img").src="p_w_picpaths/3.jpg";
now_number=2;
document.getElementById("dot2").style.backgroundColor='#EAEA06';
document.getElementById("dot1").style.backgroundColor='';
document.getElementById("dot3").style.backgroundColor='';
document.getElementById("dot4").style.backgroundColor='';
break;
case 3:
document.getElementById("img").src="p_w_picpaths/cy.jpg";
now_number=3;
document.getElementById("dot3").style.backgroundColor='#EAEA06';
document.getElementById("dot1").style.backgroundColor='';
document.getElementById("dot2").style.backgroundColor='';
document.getElementById("dot4").style.backgroundColor='';
break;
case 4:
document.getElementById("img").src="p_w_picpaths/zjnxz.jpg";
now_number=4;
document.getElementById("dot4").style.backgroundColor='#EAEA06';
document.getElementById("dot1").style.backgroundColor='';
document.getElementById("dot2").style.backgroundColor='';
document.getElementById("dot3").style.backgroundColor='';
break;
}
}
function myChangePictureAuto()
{
now_number++;
if (now_number==5) {
now_number=1;
}
myChangePicture(now_number);
setTimeout("myChangePictureAuto()",3000);
}
window.onload=function(){
now_number=0;
myChangePictureAuto();
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