需要下载mobile-detect.min.js插件.

<script src="/static/jquery.min.js"></script>  
<script src="/static/mobile-detect.min.js"></script>  
<script>  //判断数组中是否包含某字符串  Array.prototype.contains = function(needle) {  for (i in this) {  if (this[i].indexOf(needle) > 0)  return i;  }  return -1;  }  var device_type = navigator.userAgent;//获取userAgent信息  //document.write(device_type);//打印到页面  var md = new MobileDetect(device_type);//初始化mobile-detect  var os = md.os();//获取系统  var model = "";  if (os == "iOS") { os = md.os() + md.version("iPhone");  model = md.mobile();  } else if (os == "AndroidOS") {os = md.os() + md.version("Android");  var sss = device_type.split(";");  var i = sss.contains("Build/");  if (i > -1) {  model = sss[i].substring(0, sss[i].indexOf("Build/"));  }  }  setCookie('phone', os + "-" + model,3); //写入后,后台php可以得到这个参数并入库//alert(getCookie('phone'));  function setCookie(c_name,value,expiredays)
{
var exdate=new Date()
exdate.setDate(exdate.getDate()+expiredays)
document.cookie=c_name+ "=" +escape(value)+
((expiredays==null) ? "" : ";expires="+exdate.toGMTString())
}</script>