js自動切換的代碼

06-16

<!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=gb2312" /><title>JavaScript 圖片切換展示效果_收集自_http://www.codefans.net</title></head><body><style type="text/css">.container, .container *{margin:0; padding:0;}.container{width:408px; height:168px; overflow:hidden;position:relative;}.slider{position:absolute;}.slider li{ list-style:none;display:inline;}.slider img{ width:408px; height:168px; display:block;}.slider2{width:2000px;}.slider2 li{float:left;}.num{ position:absolute; right:5px; bottom:5px;}.num li{float: left;color: #FF7300;text-align: center;line-height: 16px;width: 16px;height: 16px;font-family: Arial;font-size: 12px;cursor: pointer;overflow: hidden;margin: 3px 1px;border: 1px solid #FF7300;background-color: #fff;}.num li.on{color: #fff;line-height: 21px;width: 21px;height: 21px;font-size: 16px;margin: 0 1px;border: 0;background-color: #FF7300;font-weight: bold;}</style><div class="container" id="idTransformView"><ul class="slider" id="idSlider"> <li><img src="1.jpg"/></li> <li><img src="2.jpg"/></li> <li><img src="3.gif"/></li></ul><ul class="num" id="idNum"> <li>1</li> <li>2</li> <li>3</li></ul></div><br /><div class="container" id="idTransformView2"><ul class="slider slider2" id="idSlider2"> <li><img src="1.jpg"/></li> <li><img src="2.jpg"/></li> <li><img src="3.gif"/></li></ul><ul class="num" id="idNum2"> <li>1</li> <li>2</li> <li>3</li></ul></div><br /><div><input id="idStop" type="button" value=" 停止自動 " /><input id="idStart" type="button" value=" 開始自動 " /><br /><br /><input id="idPre" type="button" value=" <- 上一個 " /><input id="idNext" type="button" value=" 下一個 -> " /><br /><br />切換速度：<input id="idFast" type="button" value=" + 加速 " /><input id="idSlow" type="button" value=" - 減速 " /><br /><br />停頓時間：<input id="idAdd" type="button" value=" + 加時間 " /><input id="idReduce" type="button" value=" - 減時間 " /><br /><br /><input id="idReset" type="button" value=" Reset " /></div><script type="text/javascript">var $ = function (id) {return "string" == typeof id ? document.getElementById(id) : id;};var Class = {create: function() {return function() { this.initialize.apply(this, arguments);}}}Object.extend = function(destination, source) {for (var property in source) { destination[property] = source[property];}return destination;}var TransformView = Class.create();TransformView.prototype = {//容器對象,滑動對象,切換參數,切換數量initialize: function(container, slider, parameter, count, options) {if(parameter <= 0 || count <= 0) return;var oContainer = $(container), oSlider = $(slider), oThis = this;this.Index = 0;//當前索引this._timer = null;//定時器this._slider = oSlider;//滑動對象this._parameter = parameter;//切換參數this._count = count || 0;//切換數量this._target = 0;//目標參數this.SetOptions(options);this.Up = !!this.options.Up;this.Step = Math.abs(this.options.Step);this.Time = Math.abs(this.options.Time);this.Auto = !!this.options.Auto;this.Pause = Math.abs(this.options.Pause);this.onStart = this.options.onStart;this.onFinish = this.options.onFinish;oContainer.style.overflow = "hidden";oContainer.style.position = "relative";oSlider.style.position = "absolute";oSlider.style.top = oSlider.style.left = 0;},//設置默認屬性SetOptions: function(options) {this.options = {//默認值 Up: true,//是否向上(否則向左) Step: 5,//滑動變化率 Time: 10,//滑動延時 Auto: true,//是否自動轉換 Pause: 2000,//停頓時間(Auto為true時有效) onStart: function(){},//開始轉換時執行 onFinish: function(){}//完成轉換時執行};Object.extend(this.options, options || {});},//開始切換設置Start: function() {if(this.Index < 0){ this.Index = this._count - 1;} else if (this.Index >= this._count){ this.Index = 0; }this._target = -1 * this._parameter * this.Index;this.onStart();this.Move();},//移動Move: function() {clearTimeout(this._timer);var oThis = this, style = this.Up ? "top" : "left", iNow = parseInt(this._slider.style[style]) || 0, iStep = this.GetStep(this._target, iNow);if (iStep != 0) { this._slider.style[style] = (iNow + iStep) + "px"; this._timer = setTimeout(function(){ oThis.Move(); }, this.Time);} else { this._slider.style[style] = this._target + "px"; this.onFinish(); if (this.Auto) { this._timer = setTimeout(function(){ oThis.Index++; oThis.Start(); }, this.Pause); }}},//獲取步長GetStep: function(iTarget, iNow) {var iStep = (iTarget - iNow) / this.Step;if (iStep == 0) return 0;if (Math.abs(iStep) < 1) return (iStep > 0 ? 1 : -1);return iStep;},//停止Stop: function(iTarget, iNow) {clearTimeout(this._timer);this._slider.style[this.Up ? "top" : "left"] = this._target + "px";}};window.onload=function(){function Each(list, fun){ for (var i = 0, len = list.length; i < len; i++) { fun(list[i], i); }};var objs = $("idNum").getElementsByTagName("li");var tv = new TransformView("idTransformView", "idSlider", 168, 3, { onStart : function(){ Each(objs, function(o, i){ o.className = tv.Index == i ? "on" : ""; }) }//按鈕樣式});tv.Start();Each(objs, function(o, i){ o.onmouseover = function(){ o.className = "on"; tv.Auto = false; tv.Index = i; tv.Start(); } o.onmouseout = function(){ o.className = ""; tv.Auto = true; tv.Start(); }})////////////////////////test2var objs2 = $("idNum2").getElementsByTagName("li");var tv2 = new TransformView("idTransformView2", "idSlider2", 408, 3, { onStart: function(){ Each(objs2, function(o, i){ o.className = tv2.Index == i ? "on" : ""; }) },//按鈕樣式 Up: false});tv2.Start();Each(objs2, function(o, i){ o.onmouseover = function(){ o.className = "on"; tv2.Auto = false; tv2.Index = i; tv2.Start(); } o.onmouseout = function(){ o.className = ""; tv2.Auto = true; tv2.Start(); }})$("idStop").onclick = function(){ tv2.Auto = false; tv2.Stop(); }$("idStart").onclick = function(){ tv2.Auto = true; tv2.Start(); }$("idNext").onclick = function(){ tv2.Index++; tv2.Start(); }$("idPre").onclick = function(){ tv2.Index--;tv2.Start(); }$("idFast").onclick = function(){ if(--tv2.Step <= 0){tv2.Step = 1;} }$("idSlow").onclick = function(){ if(++tv2.Step >= 10){tv2.Step = 10;} }$("idReduce").onclick = function(){ tv2.Pause-=1000; if(tv2.Pause <= 0){tv2.Pause = 0;} }$("idAdd").onclick = function(){ tv2.Pause+=1000; if(tv2.Pause >= 5000){tv2.Pause = 5000;} }$("idReset").onclick = function(){ tv2.Step = Math.abs(tv2.options.Step); tv2.Time = Math.abs(tv2.options.Time); tv2.Auto = !!tv2.options.Auto; tv2.Pause = Math.abs(tv2.options.Pause);}}</script></body></html>
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