<!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>照片墙一多实例演示</title> <style type="text/css"> body,div,h2,ul,li{margin:0;padding:0;} body{font:12px/1.5 Arail;} .box{width:860px;margin:10px auto;background:#eee;border:1px solid #b8b8b8;overflow:hidden} .title{height:30px;line-height:30px;font-size:14px;padding:0 15px 0 35px;border-bottom:1px solid #b8b8b8;background:#fafafa url(http://js.alixixi.com/img/mm/ico.gif) 5px 50% no-repeat;} .title span{float:left;} .title a{float:right;color:#06f;outline:none;} .title a:hover{color:red;} .box ul{float:left;padding:0 15px 15px 0;} .box li{float:left;width:140px;height:105px;padding:6px;background:#fff;border:1px solid #c3c3c3;display:inline;margin:15px 0 0 15px;list-style:none;} .box li img{float:left;width:140px;height:105px;} .box li.hig{padding:5px;border:2px dashed #f30;opacity:0.5;filter:alpha(opacity=50);} </style> <script type="text/javascript"> //获取ID var $ = function (id) {return typeof id === "string" ? document.getElementById(id) : id}; //获取tagName var $$ = function (tagName, oParent) {return (oParent || document).getElementsByTagName(tagName)}; //获取class var $$$ = function (sClass, oParent) { var aClass = [], i = 0, reClass = new RegExp("(\s|^)" + sClass + "($|\s)"), aElement = $$("*", oParent); for (i = 0; i < aElement.length; i++)reClass.test(aElement[i].className) && aClass.push(aElement[i]); return aClass }; //获取元素位置 function getPos(obj) { var iTop = obj.offsetTop; var iLeft = obj.offsetLeft; while (obj.offsetParent) { iTop += obj.offsetParent.offsetTop; iLeft += obj.offsetParent.offsetLeft; obj = obj.offsetParent; } return {top:iTop, left:iLeft} }; //创建照片墙对象 var PhotoWall = function () {this.initialize.apply(this, arguments)}; PhotoWall.prototype = { initialize: function (obj, aData) { var oThis = this; this.oParent = $(obj); this.oUl = $$("ul", this.oParent)[0]; this.oBtn = $$("a", this.oParent)[0]; this.zIndex = 1; this.aPos = []; this.aData = aData; this.dom = document.documentElement || document.body; this.create(); this.oBtn.onclick = function () {oThis.randomOrder()} }, create: function () { var aFrag = document.createDocumentFragment(); var i = 0; for (i = 0; i < this.aData.length; i++) { var oLi = document.createElement("li"); var oImg = document.createElement("img"); oImg.src = this.aData[i]; oLi.appendChild(oImg); aFrag.appendChild(oLi) } this.oUl.appendChild(aFrag); this.aLi = $$("li", this.oParent); this.changeLayout() }, changeLayout: function () { var i = 0; this.oParent.style.height = this.oParent.offsetHeight - 2 + "px"; this.aPos.length = 0; for (i = 0; i < this.aLi.length; i++) this.aLi[i].style.cssText = ""; for (i = 0; i < this.aLi.length; i++) { this.aLi[i].index = i; this.aLi[i].style.top = getPos(this.aLi[i]).top + "px"; this.aLi[i].style.left = getPos(this.aLi[i]).left + "px"; this.aPos.push({left:getPos(this.aLi[i]).left, top:getPos(this.aLi[i]).top}) } for (i = 0; i < this.aLi.length; i++) { this.aLi[i].style.position = "absolute"; this.aLi[i].style.margin = "0"; this.drag(this.aLi[i]) } }, drag: function (obj, handle) { var oThis = this; var handle = handle || obj; handle.style.cursor = "move"; handle.onmousedown = function (event) { var event = event || window.event; var disX = event.clientX - this.offsetLeft; var disY = event.clientY - this.offsetTop; var oNear = null; handle.style.zIndex = oThis.zIndex++; document.onmousemove = function (event) { var event = event || window.event; var iL = event.clientX - disX; var iT = event.clientY - disY; var maxL = Math.max(oThis.dom.clientWidth, oThis.dom.scrollWidth) - handle.offsetWidth; var maxT = Math.max(oThis.dom.clientHeight, oThis.dom.scrollHeight) - handle.offsetHeight; iL < 0 && (iL = 0); iT < 0 && (iT = 0); iL > maxL && (iL = maxL); iT > maxT && (iT = maxT); handle.style.left = iL + "px"; handle.style.top = iT + "px"; oNear = oThis.findNearest(obj); for (var i = 0; i < oThis.aLi.length; i++) oThis.aLi[i].className = ""; oNear && (oNear.className = "hig"); return false }; document.onmouseup = function () { document.onmousemove = null; document.onmouseup = null; if (oNear) { handle.index = [handle.index, oNear.index]; oNear.index = handle.index[0]; handle.index = handle.index[1]; oNear.style.zIndex = oThis.zIndex++; oThis.doMove(handle, oThis.aPos[handle.index]); oThis.doMove(oNear, oThis.aPos[oNear.index]); oNear.className = ""; } else { oThis.doMove(handle, oThis.aPos[handle.index]) } handle.releaseCapture && handle.releaseCapture() }; this.setCapture && this.setCapture(); return false }; }, doMove: function (obj, iTarget, callback) { var oThis = this; clearInterval(obj.timer); obj.timer = setInterval(function () { var iCurL = getPos(obj).left; var iCurT = getPos(obj).top; var iSpeedL = (iTarget.left - iCurL) / 5; var iSpeedT = (iTarget.top - iCurT) / 5; iSpeedL = iSpeedL > 0 ? Math.ceil(iSpeedL) : Math.floor(iSpeedL); iSpeedT = iSpeedT > 0 ? Math.ceil(iSpeedT) : Math.floor(iSpeedT); if (iCurL == iTarget.left && iCurT == iTarget.top) { clearInterval(obj.timer); callback && callback() } else { obj.style.left = iCurL + iSpeedL + "px"; obj.style.top = iCurT + iSpeedT + "px" } }, 30) }, findNearest: function (obj) { var aDistance = []; var i = 0; for (i = 0; i < this.aLi.length; i++) aDistance[i] = this.aLi[i] == obj ? Number.MAX_VALUE : this.getDistance(obj, this.aLi[i]); var minNum = Number.MAX_VALUE; var minIndex = -1; for (i = 0; i < aDistance.length; i++) aDistance[i] < minNum && (minNum = aDistance[i], minIndex = i); return this.isButt(obj, this.aLi[minIndex]) ? this.aLi[minIndex] : null }, getDistance: function(obj1, obj2) { var a = (obj1.offsetLeft + obj1.offsetWidth / 2) - (obj2.offsetLeft + obj2.offsetWidth / 2); var b = (obj1.offsetTop + obj1.offsetTop / 2) - (obj2.offsetTop + obj2.offsetTop / 2); return Math.sqrt(a * a + b * b) }, isButt: function (obj1, obj2) { var l1 = obj1.offsetLeft; var t1 = obj1.offsetTop; var r1 = l1 + obj1.offsetWidth; var b1 = t1 + obj1.offsetHeight; var l2 = obj2.offsetLeft; var t2 = obj2.offsetTop; var r2 = l2 + obj2.offsetWidth; var b2 = t2 + obj2.offsetHeight; return !(r1 < l2 || b1 < t2 || r2 < l1 || b2 < t1) }, randomOrder: function () { this.aPos.sort(function () {return Math.random() > 0.5 ? 1 : -1}); for (var i = 0; i < this.aLi.length; i++) { this.aLi[i].index = i; this.doMove(this.aLi[i], this.aPos[i]) } } }; window.onload = function () { var aBox = $$$("box"); var aData = []; var aExample = []; var i = 0; //生成图片数据 for (i = 0; i < 20; i++) aData[aData.length] = "http://js.alixixi.com/img/mm/" + i + ".jpg"; //循环创建多个实例 for (i = 0; i < aBox.length; i++) { var oExample = new PhotoWall(aBox[i], aData); aExample.push(oExample) } this.onresize = function () { for (var p in aExample) aExample[p].changeLayout() }; this.onresize() }; </script> </head> <body> <div class="box"> <h2 class="title"><span>一堆90后</span><a href="javascript:;" class="order">随机排序</a></h2> <ul></ul> </div> <div class="box"> <h2 class="title"><span>一堆90后</span><a href="javascript:;" class="order">随机排序</a></h2> <ul></ul> </div> </body> </html>
效果：
