#hwslider{width: 100%;height:auto;min-height: 120px;margin:40px auto; position: relative; overflow: hidden;} 
#hwslider ul{width: 100%; height:100%; position: absolute; z-index: 1} 
#hwslider ul li{display:none;position:absolute; left:0; top:0; width: 100%;height:100%; overflow: hidden;} 
#hwslider ul li.active{display: block;} 
#hwslider ul li img{max-width: 100%} 
#dots{position: absolute; bottom:20px; left:200px; min-width:60px; height: 12px; z-index: 2;} 
#dots span{float: left; width:12px;height: 12px; border: 1px solid #fff; border-radius: 50%; background: #333; margin-right: 8px; cursor: pointer;} 
#dots span.active{background:orangered} 
.arr{display:none;position: absolute; top: 140px; z-index: 2;width: 40px; height: 40px; line-height: 38px; text-align: center;; font-size: 36px; background: rgba(0,0,0,.3); color: #fff; text-decoration: none} 
.arr:hover{background: rgba(0,0,0,.7); text-decoration: none;} 
#hwslider:hover .arr{display: block; text-decoration: none;color: #fff} 
#prev{left: 20px} 
#next{right: 20px} 

$(function(){ 
var slider = $("#hwslider"); 
var dots = $("#dots span"), 
prev = $("#prev"),next = $("#next"); 
var sliderInder = slider.children('ul') 
var hwsliderLi = sliderInder.children('li'); 
var hwsliderSize = hwsliderLi.length; //滑块的总个数 
var sliderWidth = 600; //滑块初始宽度 
var sliderHeight = 320; //滑块初始高度 
var index = 1; //初始显示第一个滑块 
var speed = 400; //滑动速度 
var interval = 3000; //间隔时间 
var dotShow = true; //是否显示可切换的导航圆点 
var autoPlay = false; //是否支持自动滑动 
var clickable = true; //是否已经点击了滑块在做滑动动画 
//初始化组件 
var resize = function(){ 
var sWidth = slider.width(); 
var dotWidth = hwsliderSize*20; 
var dotOffset = (sWidth-dotWidth)/2; 
var sHeight = sliderHeight/sliderWidth*sWidth; 
slider.css('height',sHeight); 
$("#dots").css('left',dotOffset+'px'); //导航圆点位置 
var arrOffset = (sHeight-40)/2; 
$(".arr").css('top',arrOffset+'px'); //导航箭头位置 
} 
resize(); 
$(window).resize(function(){ 
resize(); 
}); 
}); 

var mouseX = 0, 
touchStartY = 0, 
touchStartX = 0; 
hwsliderLi.on({ 
//触控开始 
'touchstart': function(e) { 
touchStartY = e.originalEvent.touches[0].clientY; 
touchStartX = e.originalEvent.touches[0].clientX; 
}, 
//触控结束 
'touchend': function(e) { 
var touchEndY = e.originalEvent.changedTouches[0].clientY, 
touchEndX = e.originalEvent.changedTouches[0].clientX, 
yDiff = touchStartY - touchEndY, 
xDiff = touchStartX - touchEndX; 
if ( Math.abs( xDiff ) > Math.abs( yDiff ) ) { 
if ( xDiff > 5 ) { 
if(index >= hwsliderSize){ 
index = 1; 
}else{ 
index += 1; 
} 
moveTo(index,'next'); 
} else { 
if(index == 1){ 
index = hwsliderSize; 
}else{ 
index -= 1; 
} 
moveTo(index,'prev'); 
} 
} 
touchStartY = null; 
touchStartX = null; 
}, 
//触控移动 
'touchmove': function(e) { 
if(e.preventDefault) { e.preventDefault(); } 
} 
});