What I want to share with you is a special effect implemented using the jQuery plug-in windowScroll
/*
* windowScroll 0.1
* window滚动插件，上下左右，可选择是否回弹。参考搜狗欢迎页面
* 兼容IE,FF,Chrome等常见浏览器
*/
;(function($,window,document,undefined){
//定义构造函数
var WindowObj=function(ele,opt){
this.$element=ele; //最外层对象
this.defaults={
'choose' : 0,//默认为上下
'verticalSpeed' : 1,
'horizontalSpeed' : 1,
'objControlUl': null
},
this.options=$.extend({},this.defaults,opt );
//阻止默认行为和冒泡,这里可以定义多个方法都要用到的函数
this.stopDefaultAndBubble=function(e){
e=e||window.event;
if (e.preventDefault) {
e.preventDefault();
}
e.returnValue=false;
if (e.stopPropagation) {
e.stopPropagation();
}
e.cancelBubble=true;
}
this.setSize=function(ele){
$(ele).css({
'width':$(window).outerWidth()+'px'
});
//自动判断元素是否存在，对undefined赋css属性无意义
$(ele).children('.stage').css({
'width':$(window).outerWidth()+'px',
'height':$(window).outerHeight()+'px'
});
$(ele).children('.page').css({
'width':$(window).outerWidth()+'px',
'height':$(window).outerHeight()+'px'
});
}
}
//给构造函数添加方法
WindowObj.prototype={
//上下滚动的方法
verticalMove:function(){
var obj=this.$element; //最外层对象
var speed=this.options.verticalSpeed;
var objControl=this.options.objControlUl;//控制按钮
var windowHeight=$(window).height();
var list=$(obj).children('.stage');
var listMax=$(list).length;
var is_chrome=navigator.userAgent.toLowerCase().indexOf('chrome')>-1;
if(is_chrome){
//判断webkit内核，供scrollTop兼容性使用
windowobject='body';
}else{
//支持IE和FF
windowobject='html';
}
var stop=0;
//均设置为windows大小
this.setSize(obj);
//得到当前的垂直位置
var stageIndex;
function getIndex(){
stageIndex=Math.round($(window).scrollTop()/windowHeight);
}
//绑定键盘上下按键事件
$(document).keydown(function(event) {
/* 绑定keycode38，即向上按钮 */
if (event.keyCode==38) {
getIndex();
setTimeout(function(){
scrollStage(windowobject,stageIndex,1); //stageIndex为当前页码
},100);
}else if (event.keyCode==40) {//绑定40，即向下按钮
getIndex();
setTimeout(function(){
scrollStage(windowobject,stageIndex,-1); //stageIndex为当前页码
},100);
}
});
//绑定滑轮功能的函数
function handle(delta){
getIndex();
if (delta<0) {
setTimeout(function(){
scrollStage(windowobject,stageIndex,-1); //stageIndex为当前页码
},100);
}else{
setTimeout(function(){
scrollStage(windowobject,stageIndex,1); //stageIndex为当前页码
},100);
}
}
//判断滑轮，解决兼容性
function wheel(event){
var delta = 0;
if (!event) event = window.event;
if (event.wheelDelta) {
delta = event.wheelDelta;
if (window.opera) delta = -delta;
} else if (event.detail) {
delta = -event.detail;
}
if (delta)
handle(delta); //调用执行函数
}
//注册事件
if (window.addEventListener) {
window.addEventListener('DOMMouseScroll', wheel, false);
}
window.onmousewheel = document.onmousewheel = wheel;
//绑定鼠标滚轮事件
$(document).bind('mousedown', function(event) {
if (e.which==2) {//which=2代表鼠标滚轮,即为中键
this.stopDefaultAndBubble(e);
//bugfix 搜狗浏览器的ie内核只有在定时器触发这个函数才生效
setTimeout(function(){
this.stopDefaultAndBubble(e);
},10);
}
});
//如果有ul li控制按钮
if (objControl!=null) {
$(objControl).delegate('li', 'click', function() {
stageIndex=$(this).index();
setTimeout(function(){
scrollStage(windowobject,stageIndex,0);
},100);
});
}
function scrollStage(obj,stIndex,dir){//如果用scrollStage=function来指定的话没有声明提前，然后就会找不到这个函数了
//obj为操作滚动的对象
//stIndex为点击调用时应该滚动到的页面页码，按键和滚轮调用时默认为1(传入0)
//dir传入滚动时的方向，0代表不滚动，1代表向上，-1代表向下
var sIndex=stIndex;//!(dir)则stageIndex为要到的页码，否则为当前页码
var windowobject=obj;
var direction=0||dir; //接收参数封装,没有传入时暂时认为为0
var target=windowHeight*sIndex; //目标页面距离文档顶部距离
if ( !$(windowobject).is(':animated') ) {//当没有在滚动时
if(!direction){ ////响应guider,此时stageIndex为目标页面页码
if ($(window).scrollTop() > target) { //内容下移，窗口上移,上方出现弹痕
direction=-1;
$(windowobject).animate({
"scrollTop": target +"px"
},1000*speed,function(){
crash_bottom(1,target,20,150); //调用撞击函数,先撞顶部,target变成当前页面了
});
}else if($(window).scrollTop() == windowHeight*sIndex){ //当前页面时
direction=0;
crash_bottom(1, target ,20,150); //模拟撞底部
}else{
direction=1;
$(windowobject).animate({
"scrollTop": target +"px"
},1000*speed,function(){
crash(1,target,20,150); //调用撞击函数,先撞底部
});
}
}else{//响应鼠标滚轮和键盘上下，sindex为当前页面
if(direction==1){
if(sIndex==0){
crash(1,target,20,150);
}else{ //往上翻
sIndex-=1;
$(windowobject).animate({
"scrollTop":windowHeight*sIndex+"px"
},1000*speed,function(){
crash_bottom(1,windowHeight*sIndex,20,150); //调用撞击函数,往下翻内容往上，先撞顶部
}
);
}
}else{
if(sIndex==listMax){
crash_bottom(1,target,20,150);
}else{ //往下翻
sIndex+=1;
$(windowobject).animate({
"scrollTop":windowHeight*sIndex+"px"
},1000*speed,function(){
crash(1,windowHeight*sIndex,20,150); //调用撞击函数,往上翻内容往下，先撞底部
});
}
}
}
}
}
//撞击函数
function crash_bottom(direction,termin,distant,time){
if (!stop) {
var scrollTop=$(window).scrollTop();
if (direction==1) {
direction=0;
$(windowobject).animate({"scrollTop":"+="+distant+"px"},time,function(){
crash_bottom(direction,termin,distant*0.6,time);
if (distant<=15||time>150) {
stop=1;//停止碰撞
$(windowobject).animate({"scrollTop":termin+"px"},time,function(){
stop=0;
});
}
});
}else if (direction==0) {
direction=1;
$(windowobject).animate({"scrollTop":termin+"px"},time,function(){
crash_bottom(direction,termin,distant*0.6,time);
if (distant<=15||time>150) {
stop=1;//停止碰撞
$(windowobject).animate({"scrollTop":termin+"px"},time,function(){
stop=0;
});
}
});
}
}
}
function crash(direction,termin,distant,time){
if (!stop) {
var scrollTop=$(window).scrollTop();
if (direction==1) {
direction=0;
$(windowobject).animate({"scrollTop":"-="+distant+"px"},time,function(){
crash(direction,termin,distant*0.6,time);
if (distant<=15||time>150) {
stop=1;//停止碰撞
$(windowobject).animate({"scrollTop":termin+"px"},time,function(){
stop=0;
});
}
});
}else if (direction==0) {
direction=1;
$(windowobject).animate({"scrollTop":termin+"px"},time,function(){
crash(direction,termin,distant*0.6,time);
if (distant<=15||time>150) {
stop=1;//停止碰撞
$(windowobject).animate({"scrollTop":termin+"px"},time,function(){
stop=0;
});
}
});
}
}
}
},
//左右滚动的方法
horizontalMove:function(){
var obj=this.$element; //最外层对象
var speed=this.options.horizontalSpeed;
var objControl=this.options.objControlUl;//控制按钮
var windowWidth=$(window).width();
var list=$(obj).children('.page');
var listMax=$(list).length;
var is_chrome=navigator.userAgent.toLowerCase().indexOf('chrome')>-1;
if(is_chrome){
//判断webkit内核，供scrollTop兼容性使用
windowobject='body';
}else{
//支持IE和FF
windowobject='html';
}
var stop=0;
//均设置为windows大小
this.setSize(obj);
$(obj).css({'width':windowWidth*listMax+'px'});
var pageIndex; //当前页面页码(负数)
function getPageIndex(){
pageIndex=Math.round(parseInt($(obj).css("margin-left")) / windowWidth);
}
//绑定键盘左右按键事件
$(document).keydown(function(event){
//判断event.keyCode为39（即向右按钮）
if (event.keyCode==39) {
getPageIndex();
scrollPage($(obj),pageIndex,-1);
}
//判断event.keyCode为37（即向左按钮
else if (event.keyCode==37) {
getPageIndex();
scrollPage($(obj),pageIndex,1);
}
});
//如果有ul li控制按钮
if (objControl!=null) {
$(objControl).delegate('li', 'click', function() {
pageIndex=$(this).index();
setTimeout(function(){
scrollPage(obj,pageIndex,0);
},100);
});
}
function scrollPage(obje,pIndex,dir){
var windowobject=obje;
var direction=0||dir;
var pageIndex=pIndex;
var dist=Math.round(parseInt($(obj).css("margin-left"))); //当前页距离左边的margin(负值)
var aim=pageIndex*windowWidth*(-1);
if (!$(windowobject).is(":animated")) {
if(!direction){ //响应nav
if (dist != aim) { //此时pageIndex为yearID.非负值
$(windowobject).animate({"margin-left": aim + "px"},
1000*speed);
}else{
direction=0;
$(windowobject).animate({"margin-left":"+="+"50px"},500).animate({"margin-left":"-="+"100px"},500).animate({"margin-left":"+="+"50px"},500);
}
}else{ //响应键盘左右键
if(direction==1){ //pageIndex为负值
if(pageIndex==0){
$(windowobject).animate({"margin-left":"+="+"50px"},500).animate({"margin-left":"-="+"100px"},500).animate({"margin-left":"+="+"50px"},500);
}else{
pageIndex+=1; //显示左边内容，左键
$(windowobject).animate({"margin-left":"+=" + windowWidth + "px"},
1000*speed);
}
}else{
if(pageIndex== ((-1)*(listMax-1))){
$(windowobject).animate({"margin-left":"-="+"50px"},500).animate({"margin-left":"+="+"100px"},500).animate({"margin-left":"-="+"50px"},500);
}else{
pageIndex-=1;
$(windowobject).animate({"margin-left":"-=" + windowWidth + "px"},
1000*speed);
}
}
}
}
}
}
}
//在插件中使用windowObj对象的方法，0为vertical，1为horizontal
$.fn.windowScroll=function(options){
//创建实体
var windowObj=new WindowObj(this,options);
//根据选择调用方法
if (windowObj.options.choose==0) {
return windowObj.verticalMove();
}else if(windowObj.options.choose==1){
return windowObj.horizontalMove();
}else{//2之后的留扩展吧
//add some functions
}
}
})(jQuery,window,document);Copy after login
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