JS to determine whether the client is a mobile phone or a PC 2 code

1. The first type:

function IsPC() {
  var userAgentInfo = navigator.userAgent;
  var Agents = ["Android", "iPhone",
        "SymbianOS", "Windows Phone",
        "iPad", "iPod"];
  var flag = true;
  for (var v = 0; v < Agents.length; v++) {
    if (userAgentInfo.indexOf(Agents[v]) > 0) {
      flag = false;
      break;
    }
  }
  return flag;
}

2. The second type:

function browserRedirect() {
  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";
  if (!(bIsIpad || bIsIphoneOs || bIsMidp || bIsUc7 || bIsUc || bIsAndroid || bIsCE || bIsWM) ){
    window.location.href=B page ;
  }
}
browserRedirect();

Baidu's judgment code

function uaredirect(f) {
 try {
 if (document.getElementById("bdmark") != null) {
  return
 }
 var b = false;
 if (arguments[1]) {
  var e = window.location.host;
  var a = window.location.href;
  if (isSubdomain(arguments[1], e) == 1) {
  f = f + "/#m/" + a;
  b = true
  } else {
  if (isSubdomain(arguments[1], e) == 2) {
   f = f + "/#m/" + a;
   b = true
  } else {
   f = a;
   b = false
  }
  }
 } else {
  b = true
 }
 if (b) {
  var c = window.location.hash;
  if (!c.match("fromapp")) {
  if ((navigator.userAgent.match(/(iPhone|iPod|Android|ios|SymbianOS)/i))) {
   location.replace(f)
  }
  }
 }
 } catch(d) {}
}
function isSubdomain(c, d) {
 this.getdomain = function(f) {
 var e = f.indexOf("://");
 if (e > 0) {
  var h = f.substr(e + 3)
 } else {
  var h = f
 }
 var g = /^www./;
 if (g.test(h)) {
  h = h.substr(4)
 }
 return h
 };
 if (c == d) {
 return 1
 } else {
 var c = this.getdomain(c);
 var b = this.getdomain(d);
 if (c == b) {
  return 1
 } else {
  c = c.replace(".", "\.");
  var a = new RegExp("\." + c + "$");
  if (b.match(a)) {
  return 2
  } else {
  return 0
  }
 }
 }
};

Usage:
< The SCRIPT type = text/javascript> Uaredirect (" mobile ","WEB "); < / SCRIPT>

Another, the feeling is not as good as the above, but you can refer to the next

var browser_class = navigator.userAgent;
var browser_class_name1 = browser_class.match("Mobile");
var browser_class_name2 = browser_class.match("mobile");
var location_url = window.location.href;
if (browser_class_name1 != null || browser_class_name2 != null) {
 if (location_url.match("wap") == null) {
 window.location.href = "http://wap.xxxx.com";
 }
} else {
 if (location_url.match("3g") != null || location_url.match("wap") != null) {
 window.location.href = "http://wap.xxxx.com";
 }
}

This article is introduced here, specific also can refer to the following article.