判断移动端还是PC端

window.onload=function(){
   var sUserAgent = navigator.userAgent.toLowerCase();
   var bIsIpad = sUserAgent.match(/ipad/i) == "ipad";
   var bIsIphoneOs = sUserAgent.match(/iphone os/i) == "iphone os";
   var bIsMidp = sUserAgent.match(/midp/i) == "midp";
   var bIsUc7 = sUserAgent.match(/rv:1.2.3.4/i) == "rv:1.2.3.4";
   var bIsUc = sUserAgent.match(/ucweb/i) == "ucweb";
   var bIsAndroid = sUserAgent.match(/android/i) == "android";
   var bIsCE = sUserAgent.match(/windows ce/i) == "windows ce";
   var bIsWM = sUserAgent.match(/windows mobile/i) == "windows mobile";
   /* 根据不同的客户端引入样以及加载页面 */
   if (bIsIpad || bIsIphoneOs || bIsMidp || bIsUc7 || bIsUc || bIsAndroid || bIsCE || bIsWM) {
      document.getElementsByClassName('box')[0].innerHTML='\u732a\u624d\u7528\u79fb\u52a8\u7aef\u6d4f\u89c8\u5668\u6253\u5f00\u9875\u9762';
   } else {
      document.getElementsByClassName('box')[0].innerHTML='\u732a\u624d\u7528\u0050\u0043\u7aef\u6d4f\u89c8\u5668\u6253\u5f00\u9875\u9762';
   }
}