3D轮播图
优化后的：
<!doctype html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<style>
html {background:#000}
body, ul {margin:0;padding:0}
li {list-style:none}
img {border:none;display:block}
.slide-wp {
width: 500px;
height: 300px;
overflow: hidden;
position: absolute;
left: 50%;
top: 50%;
margin-left: -250px;
margin-top: -150px;
}
.nav-wp {
position: absolute;
background: #ccc;
top: 50%;
margin-top: 170px;
left: 50%;
margin-left: -100px;
border-radius: 4px;
-moz-border-radius: 4px;
-webkit-border-radius: 4px;
padding: 0 20px 6px 10px;
_padding: 0 20px 2px 10px;
}
.nav li {
float: left;
margin-left: 10px;
font-size: 20px;
font-weight: bold;
font-family: tahoma;
color: #22739e;
cursor: pointer;
height: 22px;
}
.nav li.cur{color: #ff7a00}
.next {
position:absolute;
top: 0;
left: 160px;
padding: 4px 8px;
color: #ff7a00;
background: #ccc;
height: 20px;
border-radius: 4px;
-moz-border-radius: 4px;
-webkit-border-radius: 4px;
cursor: pointer;
}
</style>
</head>
<body>
<h2 style="color:#fff">对于使用IE6的同学看到的斑点，我只能表示很无奈。。。</h2>
<div id="slider" class="slide-wp">
<ul>
<li><a href="http://www.cnblogs.com/hongru/" target="_blank"><img src="http://images.cnblogs.com/cnblogs_com/hongru/264552/o_1.jpg" alt="" /></a></li>
<li><a href="http://www.cnblogs.com/hongru/" target="_blank"><img src="http://images.cnblogs.com/cnblogs_com/hongru/264552/o_2.jpg" alt="" /></a></li>
<li><a href="http://www.cnblogs.com/hongru/" target="_blank"><img src="http://images.cnblogs.com/cnblogs_com/hongru/264552/o_3.jpg" alt="" /></a></li>
<li><a href="http://www.cnblogs.com/hongru/" target="_blank"><img src="http://images.cnblogs.com/cnblogs_com/hongru/264552/o_4.jpg" alt="" /></a></li>
<li><a href="http://www.cnblogs.com/hongru/" target="_blank"><img src="http://images.cnblogs.com/cnblogs_com/hongru/264552/o_5.jpg" alt="" /></a></li>
</ul>
</div>
<div class="nav-wp">
<ul id="nav" class="nav">
<li onclick="mySlider.pos(0)">●</li>
<li onclick="mySlider.pos(1)">●</li>
<li onclick="mySlider.pos(2)">●</li>
<li onclick="mySlider.pos(3)">●</li>
<li onclick="mySlider.pos(4)">●</li>
</ul>
<a class="next" onclick="mySlider.move()">next</a>
</div>
<script type="text/javascript">
var HR = {
$ : function(i) {return document.getElementById(i)},
$$ : function(c, p) {return p.getElementsByTagName(c)},
ce : function(i, t) {
var o = document.createElement(i);
t.appendChild(o);
return o;
}
};
HR.slider3D = function () {
var init = function (o) {
this.o = o;
var wp = HR.$(o.id), ul = HR.$$('ul', wp)[0], li = this.li = HR.$$('li', ul);
this.l = li.length;
this.w = wp.offsetWidth;
this.h = wp.offsetHeight;
this.at = o.auto? o.auto : 4;
var con = this.con = HR.ce('div', wp);
con.style.cssText = 'position:absolute;left:0;top:0;width:'+this.w+'px;height:'+this.h+'px';
ul.style['display'] = 'none';
this.a1 = HR.ce('a', con);
this.a1.style.cssText = 'position:absolute;left:0;top:0;overflow:hidden';
this.a2 = HR.ce('a', con);
this.a2.style.cssText = 'position:absolute;top:0;right:0;overflow:hidden';
this.a1.innerHTML = this.a2.innerHTML = '<img alt="" />';
this.img = HR.$$('img', ul);
this.s = o.maskSize ? o.maskSize : 5;
this.mask11 = HR.ce('span', this.a1);
this.mask12 = HR.ce('span', this.a1);
this.mask21 = HR.ce('span', this.a2);
this.mask22 = HR.ce('span', this.a2);
this.pos(0);
}
init.prototype = {
pos : function (i) {
clearInterval(this.li[i].a); clearInterval(this.au); this.au = 0; this.cur = i;
var navli = HR.$$('li', HR.$(this.o.navId));
for (var j=0; j<navli.length; j++) {
navli[j].className = i == j ? 'cur' : '';
}
var img1 = HR.$$('img', this.a1)[0], img2 = HR.$$('img', this.a2)[0], _this = this;
img1.src = i==0 ? this.img[this.l-1].src : this.img[i-1].src;
img1.width = this.w;
img2.src = this.img[i].src;
img2.width = 0;
img1.height = img2.height = this.h;
this.mask11.style.cssText = 'position:absolute;left:0;top:0;font-size:0;overflow:hidden;width:0;height:0;border-color:black transparent transparent black;border-style:solid dashed dashed solid;border-width:0 '+this.w/2+'px;_border-bottom: 10px solid #ffffff;filter:chroma(color = #ffffff);';
this.mask12.style.cssText = 'position:absolute;left:0;bottom:0;font-size:0;overflow:hidden;width:0;height:0;border-color:transparent transparent black black;border-style:dashed dashed solid solid;border-width:0 '+this.w/2+'px;_border-top: 10px solid #ffffff;filter:chroma(color = #ffffff);';
this.mask21.style.cssText = 'position:absolute;right:0;top:0;font-size:0;overflow:hidden;width:0;height:0;border-color:black black transparent transparent;border-style:solid solid dashed dashed;border-width:0px;_border-bottom: 10px solid #ffffff;filter:chroma(color = #ffffff);';
this.mask22.style.cssText = 'position:absolute;right:0;bottom:0;font-size:0;overflow:hidden;width:0;height:0;border-color:transparent black black transparent;border-style:dashed solid solid dashed;border-width:0px;_border-top: 10px solid #ffffff;filter:chroma(color = #ffffff);';
this.li[i].a = setInterval(function(){_this.anim(i)}, 20);
},
anim : function (i) {
var w1 = HR.$$('img', this.a1)[0].width, w2 = HR.$$('img', this.a2)[0].width;
if (w2 == this.w) {
clearInterval(this.li[i].a);
HR.$$('img', this.a1)[0].width = 0;
HR.$$('img', this.a2)[0].width = this.w;
this.mask11.style.borderLeftWidth = this.mask11.style.borderRightWidth = this.mask12.style.borderLeftWidth = this.mask12.style.borderRightWidth = '0px';
this.mask11.style.borderTopWidth = this.mask11.style.borderBottomWidth = this.mask12.style.borderTopWidth = this.mask12.style.borderBottomWidth = this.h/this.s + 'px';
this.mask21.style.borderLeftWidth = this.mask21.style.borderRightWidth = this.mask22.style.borderLeftWidth = this.mask22.style.borderRightWidth = this.w/2 + 'px';
this.mask21.style.borderTopWidth = this.mask21.style.borderBottomWidth = this.mask22.style.borderTopWidth = this.mask22.style.borderBottomWidth = '0px';
}else {
HR.$$('img', this.a1)[0].width -= Math.ceil((this.w-w2)*.13);
HR.$$('img', this.a2)[0].width += Math.ceil((this.w-w2)*.13);
this.mask11.style.borderLeftWidth = this.mask11.style.borderRightWidth = this.mask12.style.borderLeftWidth = this.mask12.style.borderRightWidth = HR.$$('img', this.a1)[0].width/2 + 'px';
this.mask11.style.borderTopWidth = this.mask11.style.borderBottomWidth = this.mask12.style.borderTopWidth = this.mask12.style.borderBottomWidth = HR.$$('img', this.a2)[0].width*this.h/(this.s*this.w) + 'px';
this.mask21.style.borderLeftWidth = this.mask21.style.borderRightWidth = this.mask22.style.borderLeftWidth = this.mask22.style.borderRightWidth = HR.$$('img', this.a2)[0].width/2 + 'px';
this.mask21.style.borderTopWidth = this.mask21.style.borderBottomWidth = this.mask22.style.borderTopWidth = this.mask22.style.borderBottomWidth = this.h/this.s - HR.$$('img', this.a2)[0].width*this.h/(this.s*this.w) + 'px';
if (!this.au) this.auto();
}
},
auto : function () {
var _this = this;
this.au = setInterval(function(){_this.move()}, this.at*1000);
},
move : function () {
var n = this.cur==this.l-1 ? 0 : this.cur+1;
this.pos(n);
}
}
return init;
}();
var mySlider = new HR.slider3D({
id: 'slider',
maskSize: 6,
navId: 'nav',
auto: 4
})</script></body>
</html>
这个原版：
<!doctype html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <style> html {background:#000} body, ul {margin:0;padding:0} li {list-style:none} img {border:none;display:block} .slide-wp { width: 500px; height: 300px; overflow: hidden; position: absolute; left: 50%; top: 50%; margin-left: -250px; margin-top: -150px; } .nav-wp { position: absolute; background: #ccc; top: 50%; margin-top: 170px; left: 50%; margin-left: -100px; border-radius: 4px; -moz-border-radius: 4px; -webkit-border-radius: 4px; padding: 0 20px 6px 10px; _padding: 0 20px 2px 10px; } .nav li { float: left; margin-left: 10px; font-size: 20px; font-weight: bold; font-family: tahoma; color: #22739e; cursor: pointer; height: 22px; } .nav li.cur{color: #ff7a00} .next { position:absolute; top: 0; left: 160px; padding: 4px 8px; color: #ff7a00; background: #ccc; height: 20px; border-radius: 4px; -moz-border-radius: 4px; -webkit-border-radius: 4px; cursor: pointer; } </style> </head> <body> <h2 style="color:#fff">对于使用IE6的同学看到的斑点，我只能表示很无奈。。。</h2> <div id="slider" class="slide-wp"> <ul> <li><a href="http://www.cnblogs.com/hongru/" target="_blank"><img src="http://images.cnblogs.com/cnblogs_com/hongru/264552/o_1.jpg" alt="" /></a></li> <li><a href="http://www.cnblogs.com/hongru/" target="_blank"><img src="http://images.cnblogs.com/cnblogs_com/hongru/264552/o_2.jpg" alt="" /></a></li> <li><a href="http://www.cnblogs.com/hongru/" target="_blank"><img src="http://images.cnblogs.com/cnblogs_com/hongru/264552/o_3.jpg" alt="" /></a></li> <li><a href="http://www.cnblogs.com/hongru/" target="_blank"><img src="http://images.cnblogs.com/cnblogs_com/hongru/264552/o_4.jpg" alt="" /></a></li> <li><a href="http://www.cnblogs.com/hongru/" target="_blank"><img src="http://images.cnblogs.com/cnblogs_com/hongru/264552/o_5.jpg" alt="" /></a></li> </ul> </div> <div class="nav-wp"> <ul id="nav" class="nav"> <li onclick="mySlider.pos(0)">●</li> <li onclick="mySlider.pos(1)">●</li> <li onclick="mySlider.pos(2)">●</li> <li onclick="mySlider.pos(3)">●</li> <li onclick="mySlider.pos(4)">●</li> </ul> <a class="next" onclick="mySlider.move()">next</a> </div> <script type="text/javascript"> var HR = { $ : function(i) {return document.getElementById(i)}, $$ : function(c, p) {return p.getElementsByTagName(c)}, ce : function(i, t) { var o = document.createElement(i); t.appendChild(o); return o; } }; HR.slider3D = function () { var init = function (o) { this.o = o; var wp = HR.$(o.id), ul = HR.$$('ul', wp)[0], li = this.li = HR.$$('li', ul); this.l = li.length; this.w = wp.offsetWidth; this.h = wp.offsetHeight; this.at = o.auto? o.auto : 4; var con = this.con = HR.ce('div', wp); con.style.cssText = 'position:absolute;left:0;top:0;width:'+this.w+'px;height:'+this.h+'px'; ul.style['display'] = 'none'; this.a1 = HR.ce('a', con); this.a1.style.cssText = 'position:absolute;left:0;top:0;overflow:hidden'; this.a2 = HR.ce('a', con); this.a2.style.cssText = 'position:absolute;top:0;right:0;overflow:hidden'; this.a1.innerHTML = this.a2.innerHTML = '<img alt="" />'; this.img = HR.$$('img', ul); this.s = o.maskSize ? o.maskSize : 5; this.mask11 = HR.ce('span', this.a1); this.mask12 = HR.ce('span', this.a1); this.mask21 = HR.ce('span', this.a2); this.mask22 = HR.ce('span', this.a2); this.pos(0); } init.prototype = { pos : function (i) { clearInterval(this.li[i].a); clearInterval(this.au); this.au = 0; this.cur = i; var navli = HR.$$('li', HR.$(this.o.navId)); for (var j=0; j<navli.length; j++) { navli[j].className = i == j ? 'cur' : ''; } var img1 = HR.$$('img', this.a1)[0], img2 = HR.$$('img', this.a2)[0], _this = this; img1.src = i==0 ? this.img[this.l-1].src : this.img[i-1].src; img1.width = this.w; img2.src = this.img[i].src; img2.width = 0; img1.height = img2.height = this.h; this.mask11.style.cssText = 'position:absolute;left:0;top:0;font-size:0;overflow:hidden;width:0;height:0;border-color:black transparent transparent black;border-style:solid dashed dashed solid;border-width:0 '+this.w/2+'px'; this.mask12.style.cssText = 'position:absolute;left:0;bottom:0;font-size:0;overflow:hidden;width:0;height:0;border-color:transparent transparent black black;border-style:dashed dashed solid solid;border-width:0 '+this.w/2+'px'; this.mask21.style.cssText = 'position:absolute;right:0;top:0;font-size:0;overflow:hidden;width:0;height:0;border-color:black black transparent transparent;border-style:solid solid dashed dashed;border-width:0px'; this.mask22.style.cssText = 'position:absolute;right:0;bottom:0;font-size:0;overflow:hidden;width:0;height:0;border-color:transparent black black transparent;border-style:dashed solid solid dashed;border-width:0px'; this.li[i].a = setInterval(function(){_this.anim(i)}, 20); }, anim : function (i) { var w1 = HR.$$('img', this.a1)[0].width, w2 = HR.$$('img', this.a2)[0].width; if (w2 == this.w) { clearInterval(this.li[i].a); HR.$$('img', this.a1)[0].width = 0; HR.$$('img', this.a2)[0].width = this.w; this.mask11.style.borderLeftWidth = this.mask11.style.borderRightWidth = this.mask12.style.borderLeftWidth = this.mask12.style.borderRightWidth = '0px'; this.mask11.style.borderTopWidth = this.mask11.style.borderBottomWidth = this.mask12.style.borderTopWidth = this.mask12.style.borderBottomWidth = this.h/this.s + 'px'; this.mask21.style.borderLeftWidth = this.mask21.style.borderRightWidth = this.mask22.style.borderLeftWidth = this.mask22.style.borderRightWidth = this.w/2 + 'px'; this.mask21.style.borderTopWidth = this.mask21.style.borderBottomWidth = this.mask22.style.borderTopWidth = this.mask22.style.borderBottomWidth = '0px'; }else { HR.$$('img', this.a1)[0].width -= Math.ceil((this.w-w2)*.13); HR.$$('img', this.a2)[0].width += Math.ceil((this.w-w2)*.13); this.mask11.style.borderLeftWidth = this.mask11.style.borderRightWidth = this.mask12.style.borderLeftWidth = this.mask12.style.borderRightWidth = HR.$$('img', this.a1)[0].width/2 + 'px'; this.mask11.style.borderTopWidth = this.mask11.style.borderBottomWidth = this.mask12.style.borderTopWidth = this.mask12.style.borderBottomWidth = HR.$$('img', this.a2)[0].width*this.h/(this.s*this.w) + 'px'; this.mask21.style.borderLeftWidth = this.mask21.style.borderRightWidth = this.mask22.style.borderLeftWidth = this.mask22.style.borderRightWidth = HR.$$('img', this.a2)[0].width/2 + 'px'; this.mask21.style.borderTopWidth = this.mask21.style.borderBottomWidth = this.mask22.style.borderTopWidth = this.mask22.style.borderBottomWidth = this.h/this.s - HR.$$('img', this.a2)[0].width*this.h/(this.s*this.w) + 'px'; if (!this.au) this.auto(); } }, auto : function () { var _this = this; this.au = setInterval(function(){_this.move()}, this.at*1000); }, move : function () { var n = this.cur==this.l-1 ? 0 : this.cur+1; this.pos(n); } } return init; }(); var mySlider = new HR.slider3D({ id: 'slider', maskSize: 6, navId: 'nav', auto: 4 })</script></body> </html>
http://bbs.blueidea.com/thread-3006517-1-1.html
可能有一点点可用性是在于不care IE6表现的朋友，或许可以优化下代码，做成你自己的幻灯片或者其他的演示。
care IE6的朋友仅当一阵清风，因为IE6的三角边支持的确不好，出现斑点我也只能表示无能为力。
最后还是稍稍说一下思路，利用三角边在轮播区域的四个角做了四个遮罩，然后同时改变两张图片的宽度（或高度）以及四个遮罩的borderWidth，稍作调整即可。由于黑色的三角边遮挡了一部分变化的图片，所以不注意的时候会有图片被渐进压缩的感觉。其实仅仅是被遮住了一部分而已。
我只稍作的封装，调用方式和可配置参数如下：
new HR.slider3D({
id: 'slider',
maskSize: 6,
navId: 'nav',
auto: 4
})
id为轮播列表父元素id，maskSize为视井深度大小，建议为高或宽可以整除的大于3的数。navId为控制器列表id。auto为自动滚动时间间隔。
可以优化的地方：
1.轮播方向，我只做了向左的变化，同样思路可以做到上下左右四个方向。
2。缓动算法，我只用了最简单的缓动，感兴趣的同学可以做成更为平滑的缓动。
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