getSystemInfo: 获取系统信息函数

getSystemInfo.js

// get system info
var getOSInfo = function () {
    var ver = navigator.userAgent;
    var OS = navigator.platform; 
  if(OS == "Win32" || OS == "Windows") { 
      return 'Windows';
  } else if(OS == "Mac68K" || OS == "MacPPC" || OS == "Macintosh" || OS == "MacIntel") { 
      return "Mac";            
  } else if(OS == "X11") { 
      return "Unix";   
  } else if(String(OS).indexOf("Linux") > -1) { 
      return "Linux";  
  } else { 
      return "Unknow";
  }
};
 
// get screen width
var getWindowInfo = function () {
  return {
      width : function () {return $(window).width();},
      height : function () {return $(window).height();}
  }
};