WEB前端：05_scroll滚动(图片/文字滚动)
时间：2014-05-10 01:06:34
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scroll滚动(图片/文字滚动)
网站常用效果之一，以下为简化版，用于学习javascript基础知识。
效果图：
scroll滚动(图片/文字滚动)- 纯JS简化版
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<html><head><meta http-equiv="Content-Type"
content="text/html; charset=utf-8"><title>scroll滚动 - 纯js简化版</title><style type="text/css">*{margin: 0; padding: 0;}#probox{ position: relative; border: 1px solid #ccc; width:1000px;overflow:hidden;height:120px; margin: 10px auto;}#prolist{ position: relative; width:2000px; height: 120px; list-style: none; margin: 0; padding: 0;}#prolist li {float: left; width: 250px; height: 120px; text-align: center;}#left,#right{ background: #333; color: #fff; padding: 5px; cursor:pointer;}</style><script type="text/javascript">window.onload = function() { var
probox = document.getElementById(‘probox‘); var
prolist = document.getElementById(‘prolist‘); var
prolistli = prolist.getElementsByTagName(‘li‘); var
btnleft = document.getElementById(‘left‘); var
btnright = document.getElementById(‘right‘); var
cut = prolistli[1].offsetLeft - prolistli[0].offsetLeft; var
len = prolist.offsetLeft; var
timer = null; function
autoplay() { if(timer) { clearInterval(timer); } timer = setInterval(function() { if(prolist.offsetLeft == -cut) { clearInterval(timer); prolist.appendChild(prolistli[0]); prolist.style.left = "0px"; } else
{ prolist.style.left = prolist.offsetLeft - 10 + "px"; } }, 30) } probox.onmouseover = function() { clearInterval(o); } probox.onmouseout = function() { o = setInterval(autoplay, 3000); } btnleft.onclick = function() { clearInterval(o); if(timer) { clearInterval(timer); } timer = setInterval(function() { if(prolist.offsetLeft == 0) { clearInterval(timer); prolist.insertBefore(prolistli[prolistli.length - 1], prolist.firstChild); prolist.style.left = -cut + "px"; } else
{ prolist.style.left = prolist.offsetLeft + 10 + "px"; } }, 30); o = setInterval(autoplay, 3000); } btnright.onclick = function() { clearInterval(o); if(timer) { clearInterval(timer); } timer = setInterval(function() { if(prolist.offsetLeft == -cut) { clearInterval(timer); prolist.appendChild(prolistli[0]); prolist.style.left = "0px"; } else
{ prolist.style.left = prolist.offsetLeft - 10 + "px"; } }, 30); o = setInterval(autoplay, 3000); } o = setInterval(autoplay, 3000);}</script></head><body><div id="probox"> <ul id="prolist"> <li><img src="tab1.jpg"
width="220"
height="120"
/></li> <li><img src="tab2.jpg"
width="220"
height="120"
/></li> <li><img src="tab3.jpg"
width="220"
height="120"
/></li> <li><img src="tab4.jpg"
width="220"
height="120"
/></li> <li><img src="tab5.jpg"
width="220"
height="120"
/></li> <li><img src="tab6.jpg"
width="220"
height="120"
/></li> <li><img src="tab7.jpg"
width="220"
height="120"
/></li> <li><img src="tab8.jpg"
width="220"
height="120"
/></li> </ul></div><span id="left">上一个</span> <span id="right">下一个</span></body></html> |
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