html5滑动手势

　　<div id="divMove" style="height: 100px;"></div>
    <div id="slideDiv" style="width: 300px; height:30px;background-color:#AA967D;">
        左滑
        <button id="btnDelete" style="display: none;">删除</button>
    </div>

<script type="text/javascript">
        var touchGlobal;
        document.getElementById("slideDiv").addEventListener("touchstart",function(e){
            touchGlobal=e.touches[0];    

        },false);
        document.getElementById("slideDiv").addEventListener("touchmove",function(e){
            var touch=e.touches[0];
            var x=Number(touch.pageX);
            document.getElementById("divMove").innerHTML=x;
            if(touchGlobal.pageX-x>0){
                document.getElementById("btnDelete").setAttribute("style","display: inline");
            }
            else{
                document.getElementById("btnDelete").setAttribute("style","display: none");
            }
        },false);
        document.getElementById("slideDiv").addEventListener("touchend",function(e){
        },false);
    </script>