javascript 代码:
<script type="text/javascript"> function select_play() { var select_play_box = document.getElementById("select_play_box"); var aUl = select_play_box.getElementsByTagName("ul"); var aImg = aUl[0].getElementsByTagName("li"); var aNum = aUl[1].getElementsByTagName("li"); var timer = play = null; var i = index = 0; //切换按钮 for (i = 0; i < aNum.length; i++) { aNum[i].index = i; aNum[i].onmouseover = function () { show(this.index) } } //鼠标划过关闭定时器 select_play_box.onmouseover = function () { clearInterval(play) }; //鼠标离开启动自动播放 select_play_box.onmouseout = function () { autoPlay() }; //自动播放函数 function autoPlay() { play = setInterval(function () { index++; index >= aImg.length && (index = 0); show(index); }, 2500); } autoPlay();//应用 //图片切换, 淡入淡出效果 function show(a) { index = a; var alpha = 0; for (i = 0; i < aNum.length; i++)aNum[i].className = ""; aNum[index].className = "current"; clearInterval(timer); for (i = 0; i < aImg.length; i++) { aImg[i].style.opacity = 0; aImg[i].style.filter = "alpha(opacity=0)"; } timer = setInterval(function () { alpha += 2; alpha > 100 && (alpha = 100); aImg[index].style.opacity = alpha / 100; aImg[index].style.filter = "alpha(opacity = " + alpha + ")"; alpha == 100 && clearInterval(timer) }, 20); } } </script>
html代码:
<div id="select_play_box"> <ul class="select_play_list"> <li class="select_play_current"><img src="d/a.jpg"/></li> <li><img src="d/b.jpg"/></li> <li><img src="d/c.jpg"/></li> <li><img src="d/d.jpg"/></li> </ul> <ul class="select_play_count"> <li class="select_play_current">1</li> <li>2</li> <li>3</li> <li>4</li> </ul> </div>
css代码:
1 #select_play_box { 2 position: relative; 3 width: 315px; 4 height: 272px; 5 background: #fff; 6 border-radius: 5px; 7 border: 8px solid #fff; 8 margin: 5px auto; 9 } 10 #select_play_box ul { 11 list-style-type: none; 12 } 13 14 #select_play_box ul, li { 15 margin: 0; 16 padding: 0; 17 } 18 19 #select_play_box .select_play_list { 20 position: relative; 21 width: 100%; 22 height: 100%; 23 overflow: hidden; 24 border: 1px solid #ccc; 25 } 26 27 #select_play_box .select_play_list li { 28 position: absolute; 29 top: 0; 30 margin-left: 15px; 31 margin-top: 5px; 32 width: 300px; 33 height: 170px; 34 opacity: 0; 35 filter: alpha(opacity=0); 36 } 37 #select_play_box .select_play_list img { 38 width:250px; 39 height: 250px; 40 } 41 42 #select_play_box .select_play_list li.select_play_current { 43 opacity: 1; 44 filter: alpha(opacity=100); 45 } 46 47 #select_play_box .select_play_count { 48 position: absolute; 49 right: 0; 50 bottom: 5px; 51 } 52 53 #select_play_box .select_play_count li { 54 text-align: center; 55 color: #fff; 56 float: left; 57 width: 20px; 58 height: 20px; 59 cursor: pointer; 60 margin-right: 5px; 61 overflow: hidden; 62 background: #F90; 63 opacity: 0.7; 64 filter: alpha(opacity=70); 65 border-radius: 20px; 66 } 67 68 #select_play_box .select_play_count li.select_play_current { 69 color: #fff; 70 opacity: 1; 71 filter: alpha(opacity=100); 72 font-weight: 700; 73 background: #f60; 74 }
完整html页面代码:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> <title>javascript - 图片的幻灯片效果</title> <link type="text/css" href="sy/select_auto_image.css" rel="stylesheet"/> </head> <body > <div id="select_play_box"> <ul class="select_play_list"> <li class="select_play_current"><img src="d/a.jpg"/></li> <li><img src="d/b.jpg"/></li> <li><img src="d/c.jpg"/></li> <li><img src="d/d.jpg"/></li> </ul> <ul class="select_play_count"> <li class="select_play_current">1</li> <li>2</li> <li>3</li> <li>4</li> </ul> </div> <script type="text/javascript"> function select_play() { var select_play_box = document.getElementById("select_play_box"); var aUl = select_play_box.getElementsByTagName("ul"); var aImg = aUl[0].getElementsByTagName("li"); var aNum = aUl[1].getElementsByTagName("li"); var timer = play = null; var i = index = 0; //切换按钮 for (i = 0; i < aNum.length; i++) { aNum[i].index = i; aNum[i].onmouseover = function () { show(this.index) } } //鼠标划过关闭定时器 select_play_box.onmouseover = function () { clearInterval(play) }; //鼠标离开启动自动播放 select_play_box.onmouseout = function () { autoPlay() }; //自动播放函数 function autoPlay() { play = setInterval(function () { index++; index >= aImg.length && (index = 0); show(index); }, 2500); } autoPlay();//应用 //图片切换, 淡入淡出效果 function show(a) { index = a; var alpha = 0; for (i = 0; i < aNum.length; i++)aNum[i].className = ""; aNum[index].className = "current"; clearInterval(timer); for (i = 0; i < aImg.length; i++) { aImg[i].style.opacity = 0; aImg[i].style.filter = "alpha(opacity=0)"; } timer = setInterval(function () { alpha += 2; alpha > 100 && (alpha = 100); aImg[index].style.opacity = alpha / 100; aImg[index].style.filter = "alpha(opacity = " + alpha + ")"; alpha == 100 && clearInterval(timer) }, 20); } } </script> </body> </html>
时间: 2024-10-29 19:13:36