<!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 滑动条效果</title>
</head>
<body>
<script>
var isIE = (document.all) ? true : false;
var $ = function (id) {
return "string" == typeof id ? document.getElementById(id) : id;
};
var Class = {
create: function() {
return function() { this.initialize.apply(this, arguments); }
}
}
var Extend = function(destination, source) {
for (var property in source) {
destination[property] = source[property];
}
}
var Bind = function(object, fun) {
var args = Array.prototype.slice.call(arguments).slice(2);
return function() {
return fun.apply(object, args);
}
}
var BindAsEventListener = function(object, fun) {
return function(event) {
return fun.call(object, Event(event));
}
}
function Event(e){
var oEvent = isIE ? window.event : e;
if (isIE) {
oEvent.pageX = oEvent.clientX + document.documentElement.scrollLeft;
oEvent.pageY = oEvent.clientY + document.documentElement.scrollTop;
oEvent.preventDefault = function () { this.returnValue = false; };
oEvent.detail = oEvent.wheelDelta / (-40);
oEvent.stopPropagation = function(){ this.cancelBubble = true; };
}
return oEvent;
}
var CurrentStyle = function(element){
return element.currentStyle || document.defaultView.getComputedStyle(element, null);
}
function addEventHandler(oTarget, sEventType, fnHandler) {
if (oTarget.addEventListener) {
oTarget.addEventListener(sEventType, fnHandler, false);
} else if (oTarget.attachEvent) {
oTarget.attachEvent("on" + sEventType, fnHandler);
} else {
oTarget["on" + sEventType] = fnHandler;
}
};
function removeEventHandler(oTarget, sEventType, fnHandler) {
if (oTarget.removeEventListener) {
oTarget.removeEventListener(sEventType, fnHandler, false);
} else if (oTarget.detachEvent) {
oTarget.detachEvent("on" + sEventType, fnHandler);
} else {
oTarget["on" + sEventType] = null;
}
};
//滑动条程序
var Slider = Class.create();
Slider.prototype = {
//容器对象，滑块
initialize: function(container, bar, options) {
this.Bar = $(bar);
this.Container = $(container);
this._timer = null;//自动滑移的定时器
this._ondrag = false;//解决ie的click问题
//是否最小值、最大值、中间值
this._IsMin = this._IsMax = this._IsMid = false;
//实例化一个拖放对象，并限定范围
this._drag = new Drag(this.Bar, { Limit: true, mxContainer: this.Container,
onStart: Bind(this, this.DragStart), onStop: Bind(this, this.DragStop), onMove: Bind(this, this.Move)
});
this.SetOptions(options);
this.WheelSpeed = Math.max(0, this.options.WheelSpeed);
this.KeySpeed = Math.max(0, this.options.KeySpeed);
this.MinValue = this.options.MinValue;
this.MaxValue = this.options.MaxValue;
this.RunTime = Math.max(1, this.options.RunTime);
this.RunStep = Math.max(1, this.options.RunStep);
this.Ease = !!this.options.Ease;
this.EaseStep = Math.max(1, this.options.EaseStep);
this.onMin = this.options.onMin;
this.onMax = this.options.onMax;
this.onMid = this.options.onMid;
this.onDragStart = this.options.onDragStart;
this.onDragStop = this.options.onDragStop;
this.onMove = this.options.onMove;
this._horizontal = !!this.options.Horizontal;//一般不允许修改
//锁定拖放方向
this._drag[this._horizontal ? "LockY" : "LockX"] = true;
//点击控制
addEventHandler(this.Container, "click", BindAsEventListener(this, function(e){ this._ondrag || this.ClickCtrl(e);}));
//取消冒泡，防止跟Container的click冲突
addEventHandler(this.Bar, "click", BindAsEventListener(this, function(e){ e.stopPropagation(); }));
//设置鼠标滚轮控制
this.WheelBind(this.Container);
//设置方向键控制
this.KeyBind(this.Container);
//修正获取焦点
var oFocus = isIE ? (this.KeyBind(this.Bar), this.Bar) : this.Container;
addEventHandler(this.Bar, "mousedown", function(){ oFocus.focus(); });
//ie鼠标捕获和ff的取消默认动作都不能获得焦点，所以要手动获取
//如果ie把focus设置到Container，那么在出现滚动条时ie的focus可能会导致自动滚屏
},
//设置默认属性
SetOptions: function(options) {
this.options = {//默认值
MinValue: 0,//最小值
MaxValue: 100,//最大值
WheelSpeed: 5,//鼠标滚轮速度,越大越快(0则取消鼠标滚轮控制)
KeySpeed: 50,//方向键滚动速度,越大越慢(0则取消方向键控制)
Horizontal: true,//是否水平滑动
RunTime: 20,//自动滑移的延时时间,越大越慢
RunStep: 2,//自动滑移每次滑动的百分比
Ease: false,//是否缓动
EaseStep: 5,//缓动等级,越大越慢
onMin: function(){},//最小值时执行
onMax: function(){},//最大值时执行
onMid: function(){},//中间值时执行
onDragStart:function(){},//拖动开始时执行
onDragStop: function(){},//拖动结束时执行
onMove: function(){}//滑动时执行
};
Extend(this.options, options || {});
},
//开始拖放滑动
DragStart: function() {
this.onDragStart();
this._ondrag = true;
},
//结束拖放滑动
DragStop: function() {
this.onDragStop();
setTimeout(Bind(this, function(){ this._ondrag = false; }), 10);
},
//滑动中
Move: function() {
this.onMove();
var percent = this.GetPercent();
//最小值判断
if(percent > 0){
this._IsMin = false;
}else{
if(!this._IsMin){ this.onMin(); this._IsMin = true; }
}
//最大值判断
if(percent < 1){
this._IsMax = false;
}else{
if(!this._IsMax){ this.onMax(); this._IsMax = true; }
}
//中间值判断
if(percent > 0 && percent < 1){
if(!this._IsMid){ this.onMid(); this._IsMid = true; }
}else{
this._IsMid = false;
}
},
//鼠标点击控制
ClickCtrl: function(e) {
var o = this.Container, iLeft = o.offsetLeft, iTop = o.offsetTop;
while (o.offsetParent) { o = o.offsetParent; iLeft += o.offsetLeft; iTop += o.offsetTop; }
//考虑有滚动条，要用pageX和pageY
this.EasePos(e.pageX - iLeft - this.Bar.offsetWidth / 2, e.pageY - iTop - this.Bar.offsetHeight / 2);
},
//鼠标滚轮控制
WheelCtrl: function(e) {
var i = this.WheelSpeed * e.detail;
this.SetPos(this.Bar.offsetLeft + i, this.Bar.offsetTop + i);
//防止触发其他滚动条
e.preventDefault();
},
//绑定鼠标滚轮
WheelBind: function(o) {
//鼠标滚轮控制
addEventHandler(o, isIE ? "mousewheel" : "DOMMouseScroll", BindAsEventListener(this, this.WheelCtrl));
},
//方向键控制
KeyCtrl: function(e) {
if(this.KeySpeed){
var iLeft = this.Bar.offsetLeft, iWidth = (this.Container.clientWidth - this.Bar.offsetWidth) / this.KeySpeed
, iTop = this.Bar.offsetTop, iHeight = (this.Container.clientHeight - this.Bar.offsetHeight) / this.KeySpeed;
//根据按键设置值
switch (e.keyCode) {
case 37 ://左
iLeft -= iWidth; break;
case 38 ://上
iTop -= iHeight; break;
case 39 ://右
iLeft += iWidth; break;
case 40 ://下
iTop += iHeight; break;
default :
return;//不是方向按键返回
}
this.SetPos(iLeft, iTop);
//防止触发其他滚动条
e.preventDefault();
}
},
//绑定方向键
KeyBind: function(o) {
addEventHandler(o, "keydown", BindAsEventListener(this, this.KeyCtrl));
//设置tabIndex使设置对象能支持focus
o.tabIndex = -1;
//取消focus时出现的虚线框
isIE || (o.style.outline = "none");
},
//获取当前值
GetValue: function() {
//根据最大最小值和滑动百分比取值
return this.MinValue + this.GetPercent() * (this.MaxValue - this.MinValue);
},
//设置值位置
SetValue: function(value) {
//根据最大最小值和参数值设置滑块位置
this.SetPercent((value- this.MinValue)/(this.MaxValue - this.MinValue));
},
//获取百分比
GetPercent: function() {
//根据滑动条滑块取百分比
return this._horizontal ? this.Bar.offsetLeft / (this.Container.clientWidth - this.Bar.offsetWidth)
: this.Bar.offsetTop / (this.Container.clientHeight - this.Bar.offsetHeight)
},
//设置百�
JS实现图片滑动效果 超帅
3星 · 超过75%的资源 需积分: 31 40 浏览量
2008-12-25
07:25:51
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评论 1
收藏 6KB RAR 举报 
JS实现活动效果.rar （2个子文件） 
Slider.htm 13KB Drag.js 5KB资源评论
reno135792012-10-12效果非常不错~- QQ5436898192018-03-10完全不能用，骗人的
- jhunf5202014-05-23效果还可以吧，没有标题说的那么夸张·
- anita1988252012-12-06效果不错~但是不是我想要的效果昂，不过还是谢谢
