<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=320,user-scalable=no" />
<title>菜单条</title>
</head>
<body>
<style style='display:none' contentEditable>
*{ margin:0; padding:0;}
ul,li{ margin:0; padding:0; list-style:none;}
#outer{ border:1px solid red; width:300px; height:46px; margin:20px auto; text-align:center; vertical-align:middle; line-height:46px; position:relative; overflow:hidden; background:#eee;}
#outer:hover{ border-color:#333; cursor:pointer;}
#inner{ position:absolute; left:0; top:1px; height:44px; line-height:44px; width:300px; background:#666; text-align:left; clear:both; overflow:hidden;}
#inner li{ width:auto; height:44px; float:left; display:inline; padding:0 15px; text-align:center; }
#inner li:hover{ background:#333;}
#inner li a{font-size:14px; color:#fff; display:inline;width:auto; height:44px; line-height:44px; text-decoration:none;}
.translateZ{ -webkit-transform:translateZ(0);transform:translateZ(0);-webkit-backface-visibility: hidden;backface-visibility: hidden;}
.classtest{ background:#333;}
</style>
<div id="outer">
<ul id="inner" >
<li><a href="">首页start</a></li>
<li><a href="">美剧1</a></li>
<li><a href="">电影1</a></li>
<li><a href="">购物1</a></li>
<li><a href="">时尚1</a></li>
<li><a href="">新闻1</a></li>
<li><a href="">其他1</a></li>
<li><a href="">热点1</a></li>
<li><a href="">电视1</a></li>
<li><a href="">历史1</a></li>
<li><a href="">首页2</a></li>
<li><a href="">美剧2</a></li>
<li><a href="">电影2</a></li>
<li><a href="">购物2</a></li>
<li><a href="">时尚2</a></li>
<li><a href="">新闻2</a></li>
<li><a href="">其他2</a></li>
<li><a href="">热点2</a></li>
<li><a href="">电视2</a></li>
<li><a href="">结尾end</a></li>
</ul>
</div>
touches：当前屏幕上所有手指的列表
targetTouches：当前dom元素上手指的列表，尽量使用这个代替touches
changedTouches：涉及当前事件的手指的列表，尽量使用这个代替touches
<script src="../js/jquery-1.9.1.min.js"></script>
<script>
window.onload=function(){
function getStyle(obj,attr){
return obj.currentStyle? obj.currentStyle[attr]:getComputedStyle(obj,false)[attr];
}
var support = document.body.classList==undefined ? false : true ;
var outer=document.getElementById("outer");
var inner=document.getElementById("inner");
var li=inner.getElementsByTagName("li");
var innerWd=0,i=0;
for(;i<li.length;i++){
innerWd+=li[i].offsetWidth;
}
inner.style.width=innerWd+'px';
var startX=0;
var alls=0;
var moveLeft=0;
var iSpeedX = 0;
var prevX = 0;
var timer = null;
var resetStartX=true;
var maxDistance=parseInt(outer.offsetWidth-innerWd); //最大滑动距离
inner.addEventListener("touchstart",start,false);
function start(e){
if(inner.offsetWidth<outer.offsetWidth)return;//如果内部元素小于外框 不需要滑动
var e=e||window.event;
e.preventDefault();
var touchs=e.touches[0],
resetStartX=true;;
//startX=prevX=touchs.pageX;
startX=touchs.pageX;
prevX=touchs.pageX;
alls=this.offsetLeft;
inner.addEventListener("touchmove",move,false);
inner.addEventListener("touchend",end,false);
}
function move(e){
var e=e||window.event;
if (e.touches.length > 1 || e.scale && e.scale !== 1) return; // 当屏幕有多个touch或者页面被缩放过，就不执行move操作
var touchs=e.changedTouches[0];
iSpeedX = touchs.pageX - prevX;//获取出手一瞬间的速度
prevX = touchs.pageX;//当前的始终覆盖上一个
moveLeft=touchs.pageX-startX;
var that=this;
if(that.offsetLeft>=0){
if(resetStartX){
startX=touchs.pageX;
resetStartX=false;
}
that.style.left=moveLeft/3+alls+'px';
}else if(that.offsetLeft<=maxDistance){
if(resetStartX){
startX=touchs.pageX;
resetStartX=false;
}
that.style.left=moveLeft/3+alls+'px';
}else{
that.style.left=moveLeft+alls+'px';
}
//this.style.webkitTransform='translateZ(0)'; //移动时候 缓存到GPU层
that.classList.add('translateZ'); //classList 对已经增加的样式 不在判断是否添加 GPU缓存hack
e.preventDefault();
}
function end(){
var self=this;
clearInterval(timer);
timer=setInterval(function(){
if(Math.abs(iSpeedX)<=1||self.offsetLeft>50||self.offsetLeft<maxDistance-50){
clearInterval(timer);
//if(self.classList.contains('translateZ')){ //滚动停止 结束时候回收GPU 垃圾
// // self.classList.remove('translateZ'); //不知道怎么删除这样样式
// // self.setAttribute("class",'');
// }
if(self.offsetLeft>=0){
$(inner).animate({left:0},300,function(){
self.classList.remove('translateZ'); //移除PGU hack
});
}
if(self.offsetLeft<maxDistance){
$(inner).animate({left:maxDistance+'px'},300,function(){
self.classList.remove('translateZ'); //移除PGU hack
});
}
}else{
iSpeedX *= 0.95;
self.style.left = parseInt(self.offsetLeft + iSpeedX) + 'px';
}
},20);
self.removeEventListener("touchmove",move,false);
self.removeEventListener("touchend",end,false);
//self.style.webkitTransform='';
}
}
</script>
</body>
</html>
function end(){
var self=this;
clearTimeout(timer);
timer=setTimeout(function(){
if(Math.abs(iSpeedX)<=1||self.offsetLeft>50||self.offsetLeft<maxDistance-50){
clearTimeout(timer);
//if(self.classList.contains('translateZ')){ //滚动停止 结束时候回收GPU 垃圾
// // self.classList.remove('translateZ'); //不知道怎么删除这样样式
// // self.setAttribute("class",'');
// }
if(self.offsetLeft>=0){
$(inner).animate({left:0},300,function(){
self.classList.remove('translateZ'); //移除PGU hack
});
}
if(self.offsetLeft<maxDistance){
$(inner).animate({left:maxDistance+'px'},300,function(){
self.classList.remove('translateZ'); //移除PGU hack
});
}
}else{
iSpeedX *= 0.95;
self.style.left = parseInt(self.offsetLeft + iSpeedX) + 'px';
console.log('setTimeoutsss');
setTimeout(arguments.callee,16)
}
},16);
self.removeEventListener("touchmove",move,false);
self.removeEventListener("touchend",end,false);
//self.style.webkitTransform='';
}
function end(){
var self=this,
stopFlag=null;
function sliderMove(){
if(Math.abs(iSpeedX)<=1||self.offsetLeft>50||self.offsetLeft<maxDistance-50){
if(self.offsetLeft>=0){
$(inner).animate({left:0},300,function(){
self.classList.remove('translateZ'); //移除PGU hack
});
}
if(self.offsetLeft<maxDistance){
$(inner).animate({left:maxDistance+'px'},300,function(){
self.classList.remove('translateZ'); //移除PGU hack
});
}
window.cancelAnimationFrame(stopFlag);//可以取消该次动画
stopFlag=null;
sliderMove=null; //清空对象
console.log('requestAnimationFramessss'+sliderMove);
}else{
iSpeedX *= 0.95;
self.style.left = parseInt(self.offsetLeft + iSpeedX) + 'px';
console.log('滑动时候requestAnimationFrame次数');
stopFlag=requestAnimationFrame(arguments.callee);
}
}
sliderMove();
self.removeEventListener("touchmove",move,false);
self.removeEventListener("touchend",end,false);
//self.style.webkitTransform='';
}
;(function() {
var lastTime = 0;
var vendors = ['ms', 'moz', 'webkit', 'o'];
for (var x = 0; x < vendors.length && !window.requestAnimationFrame; ++x) {
window.requestAnimationFrame = window[vendors[x] + 'RequestAnimationFrame'];
window.cancelAnimationFrame = window[vendors[x] + 'CancelAnimationFrame'] || window[vendors[x] + 'CancelRequestAnimationFrame'];
}
if (!window.requestAnimationFrame) window.requestAnimationFrame = function(callback, element) {
var currTime = new Date().getTime();
var timeToCall = Math.max(0, 16 - (currTime - lastTime));
var id = window.setTimeout(function() {
callback(currTime + timeToCall);
}, timeToCall);
lastTime = currTime + timeToCall;
return id;
};
if (!window.cancelAnimationFrame) window.cancelAnimationFrame = function(id) {
clearTimeout(id);
};
}());
// requestAnimationFrame polyfill by Erik Möller.
// Fixes from Paul Irish, Tino Zijdel, Andrew Mao, Klemen Slavič, Darius Bacon
// MIT license
if (!Date.now)
Date.now = function() { return new Date().getTime(); };
(function() {
'use strict';
var vendors = ['webkit', 'moz'];
for (var i = 0; i < vendors.length && !window.requestAnimationFrame; ++i) {
var vp = vendors[i];
window.requestAnimationFrame = window[vp+'RequestAnimationFrame'];
window.cancelAnimationFrame = (window[vp+'CancelAnimationFrame']
|| window[vp+'CancelRequestAnimationFrame']);
}
if (/iP(ad|hone|od).*OS 6/.test(window.navigator.userAgent) // iOS6 is buggy
|| !window.requestAnimationFrame || !window.cancelAnimationFrame) {
var lastTime = 0;
window.requestAnimationFrame = function(callback) {
var now = Date.now();
var nextTime = Math.max(lastTime + 16, now);
return setTimeout(function() { callback(lastTime = nextTime); },
nextTime - now);
};
window.cancelAnimationFrame = clearTimeout;
}
}());
本文地址：http://www.cnblogs.com/surfaces/
