1、第一种：

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、第二种：

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页面; }}browserRedirect();

百度的判断代码

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 = /^"; }}

这篇文章就介绍到这了，具体的也可以参考下面的文章。