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js图片轮播
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html代码 alt用于放要显示的内容
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js代码
// JavaScript Documentfunction ZoomPic (){ this.initialize.apply(this, arguments) }ZoomPic.prototype ={ initialize: function (id) { var _this = this; this.wrap = typeof id === "string" ? document.getElementById(id) : id; this.oUl = this.wrap.getElementsByTagName("ul")[0]; this.aLi = this.wrap.getElementsByTagName("li"); this.prev = this.wrap.getElementsByTagName("pre")[0]; this.next = this.wrap.getElementsByTagName("pre")[1]; this.timer = null; this.aSort = []; this.iCenter = 3; this._doPrev = function () { return _this.doPrev.apply(_this) }; this._doNext = function () { return _this.doNext.apply(_this) }; this.options = [ { width: 120, height: 160, top: 71, left: 134, zIndex: 1 }, { width: 161, height: 201, top: 40, left: 101, zIndex: 2 }, { width: 176, height: 219, top: 32, left: 182, zIndex: 3 }, { width: 219, height: 271, top: 0, left: 278, zIndex: 4 }, { width: 176, height: 219, top: 32, left: 405, zIndex: 3 }, { width: 161, height: 201, top: 40, left: 496, zIndex: 2 }, { width: 120, height: 160, top: 71, left: 496, zIndex: 1 } ]; for (var i = 0; i < this.aLi.length; i++) this.aSort[i] = this.aLi[i]; this.aSort.unshift(this.aSort.pop()); this.setUp(); this.addEvent(this.prev, "click", this._doPrev); this.addEvent(this.next, "click", this._doNext); this.doImgClick(); this.timer = setInterval(function () { _this.doNext(); }, 3000); //this.wrap.onmouseover = function () { // clearInterval(_this.timer) //}; this.wrap.onclick = function () { clearInterval(_this.timer) _this.timer = setInterval(function () { _this.doNext() }, 3000); } var value = http://www.mamicode.com/this.getElementsByTagName("img")[0].alt; AddValue(value); }, doPrev: function () { this.aSort.unshift(this.aSort.pop()); this.setUp() }, doNext: function () { this.aSort.push(this.aSort.shift()); this.setUp() }, doImgClick: function () { var _this = this; for (var i = 0; i < this.aSort.length; i++) { this.aSort[i].onclick = function () { if (this.index > _this.iCenter) { for (var i = 0; i < this.index - _this.iCenter; i++) _this.aSort.push(_this.aSort.shift()); _this.setUp() } else if (this.index < _this.iCenter) { for (var i = 0; i < _this.iCenter - this.index; i++) _this.aSort.unshift(_this.aSort.pop()); _this.setUp() } } } }, setUp: function () { var _this = this; var i = 0; for (i = 0; i < this.aSort.length; i++) this.oUl.appendChild(this.aSort[i]); for (i = 0; i < this.aSort.length; i++) { this.aSort[i].index = i; if (i < 7) { this.css(this.aSort[i], "display", "block"); this.doMove(this.aSort[i], this.options[i], function () { _this.doMove(_this.aSort[_this.iCenter].getElementsByTagName("img")[0], { opacity: 100 }, function () { _this.doMove(_this.aSort[_this.iCenter].getElementsByTagName("img")[0], { opacity: 100 }, function () { _this.aSort[_this.iCenter].onmouseover = function () { _this.doMove(this.getElementsByTagName("div")[0], { bottom: 0 }) }; _this.aSort[_this.iCenter].onmouseout = function () { _this.doMove(this.getElementsByTagName("div")[0], { bottom: -100 }) } }) }) }); } else { this.css(this.aSort[i], "display", "none"); this.css(this.aSort[i], "width", 0); this.css(this.aSort[i], "height", 0); this.css(this.aSort[i], "top", 37); this.css(this.aSort[i], "left", this.oUl.offsetWidth / 2) } if (i < this.iCenter || i > this.iCenter) { this.css(this.aSort[i].getElementsByTagName("img")[0], "opacity", 30) this.aSort[i].onmouseover = function () { _this.doMove(this.getElementsByTagName("img")[0], { opacity: 100 }) }; this.aSort[i].onmouseout = function () { _this.doMove(this.getElementsByTagName("img")[0], { opacity: 35 }) }; this.aSort[i].onmouseout(); } else { this.aSort[i].onmouseover = this.aSort[i].onmouseout = null } var value = http://www.mamicode.com/_this.aSort[this.iCenter].getElementsByTagName("img")[0].alt; AddValue(value); } }, addEvent: function (oElement, sEventType, fnHandler) { return oElement.addEventListener ? oElement.addEventListener(sEventType, fnHandler, false) : oElement.attachEvent("on" + sEventType, fnHandler) }, css: function (oElement, attr, value) { if (arguments.length == 2) { return oElement.currentStyle ? oElement.currentStyle[attr] : getComputedStyle(oElement, null)[attr] } else if (arguments.length == 3) { switch (attr) { case "width": case "height": case "top": case "left": case "bottom": oElement.style[attr] = value + "px"; break; case "opacity": oElement.style.filter = "alpha(opacity=" + value + ")"; oElement.style.opacity = value / 100; break; default: oElement.style[attr] = value; break } } }, doMove: function (oElement, oAttr, fnCallBack) { var _this = this; clearInterval(oElement.timer); oElement.timer = setInterval(function () { var bStop = true; for (var property in oAttr) { var iCur = parseFloat(_this.css(oElement, property)); property == "opacity" && (iCur = parseInt(iCur.toFixed(2) * 100)); var iSpeed = (oAttr[property] - iCur) / 5; iSpeed = iSpeed > 0 ? Math.ceil(iSpeed) : Math.floor(iSpeed); if (iCur != oAttr[property]) { bStop = false; _this.css(oElement, property, iCur + iSpeed) } } if (bStop) { clearInterval(oElement.timer); fnCallBack && fnCallBack.apply(_this, arguments) } }, 30) }};function AddValue(val) { var arr = val.split(‘|‘); jQuery("#txtName").html(arr[0]); jQuery("#jieshao").attr("href", arr[1]); jQuery("#zhichen").html(arr[2]); jQuery("#zhiwu").html(arr[3]); jQuery("#chuzhen").attr("href",arr[1]); jQuery("#keshi").html(arr[4]);}window.onload = function (){ new ZoomPic("box");};
js图片轮播
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