function $(v) {    if (typeof v === 'function') {        window.onload = v;    } else if (typeof v === 'string') {        return document.getElementById(v);    } else if (typeof v === 'object') {        return v;    }}/*    获取浏览器计算后的样式。    1、不要获取复合样式，如：background、margin;    2、不要获取未定义的样式，否则会不兼容，因为浏览器会根据自身的情况弹出内容;    3、不要在attr前面加空格，如：getStyle($('div1'),' width'),会弹出undefined.*/function getStyle(obj,attr) {    return obj.currentStyle ? obj.currentStyle[attr] : getComputedStyle(obj)[attr];}/*不管是否存在定位，获取从当前位置到html标签的偏移值*/function getPos(obj) {    var pos = {left:0,top:0};    while(obj) {        pos.left+= obj.offsetLeft;        pos.top+= obj.offsetTop;        obj = obj.offsetParent;    }    return pos;}/*获取class样式，并以数组的形式存回*/function getElementsByClassName(parent,tagName,className) {    var aEls = parent.getElementsByTagName(tagName);    var arr = [];    for (var i=0;i
     
      < target ? speed : - speed;            obj.timer = setInterval(function(){                                if (Math.abs(obj.offsetLeft-target)
      
       obj.offsetTop ? Math.ceil(speed) : Math.floor(speed);        if (obj.offsetTop==iTarget) {            clearInterval(obj.timer);        }            obj.style.top = obj.offsetTop + speed + 'px';                },30);}//事件绑定兼容，调用举例：bind(document,'click',fn)function bind(obj,evName,fn){  if (obj.addEventListener) {      obj.addEventListener(evName,fn,false);  //标准浏览器  } else {      obj.attachEvent('on'+evName,function(){               fn.call(obj);  //IE9以下        });  }  } //拖拽        function drag(obj){            obj.onmousedown = function(ev){                var ev = ev || event;                var disX = ev.clientX-this.offsetLeft;                var disY = ev.clientY-this.offsetTop;　　　　　　　　　　//IE9以下使用，全局捕捉                if (this.setCapture){                    this.setCapture();                    }                                document.onmousemove = function(ev){                    var ev = ev || event;                    obj.style.left = ev.clientX - disX +'px';                    obj.style.top = ev.clientY - disY +'px';                };                document.onmouseup = function(){                    document.onmouseup = document.onmousemove = null;                    if (obj.releaseCapture) {                        obj.releaseCapture();                        }                                    };                return false;            };                    }   // 设置cookie        function setCookie(key,value,t) {            var oDate = new Date();            oDate.setDate(oDate.getDate()+t);            document.cookie = key+'='+encodeURI(value)+';expires='+oDate.toGMTString();        } // 获取cookie的值        function getCookie(key) {            var arr1 = document.cookie.split('; ');            for (var i=0;i
      
     

 

//异步方式请求URL下载        function download_file(url) {            var iframeBody, result;            if (typeof(download_file.iframe) == "undefined") {                var iframe = document.createElement("iframe");                iframe.setAttribute("name", "newiframe");                download_file.iframe = iframe;                                document.body.appendChild(download_file.iframe);            }            download_file.iframe.src = url;            download_file.iframe.onload = function() {                iframeBody = window.frames["newiframe"].document.body.innerHTML;                if(iframeBody) {                    try{                        result = JSON.parse(iframeBody);                        alert('result:',result);                        if (result.status == 0) {                            alert("抱歉,该包还没有生成");                        }                    }catch(e) {                        //alert(e)                    }                                    }            }                        download_file.iframe.style.display = "none";        }

 

var DEFAULT_WIDTH = 800, // 页面的默认宽度

    ua = navigator.userAgent.toLowerCase(), // 根据 user agent 的信息获取浏览器信息

    deviceWidth = window.screen.width, // 设备的宽度

    devicePixelRatio = window.devicePixelRatio || 1, // 物理像素和设备独立像素的比例，默认为1

    scale = deviceWidth/DEFAULT_WIDTH,//缩放比例

    targetDensitydpi;

 

 

// Android4.0以下手机不支持viewport的width，需要设置target-densitydpi

if (ua.indexOf("android") !== -1 && parseFloat(ua.slice(ua.indexOf("android")+8)) < 4) {

    targetDensitydpi = DEFAULT_WIDTH / deviceWidth * devicePixelRatio * 160;

    $('meta[name="viewport"]').attr('content', 'target-densitydpi=' + targetDensitydpi + ', width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1 user-scalable=no');

}

else{

    $('meta[name="viewport"]').attr('content', 'width=' + DEFAULT_WIDTH + ', initial-scale=' + scale + ', minimum-scale=' + scale + ',maximum-scale=' + scale + ' user-scalable=no');

}