方法1:
// 判断是访问的类型
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";
document.writeln("您的浏览设备为：");
if (bIsIpad || bIsIphoneOs || bIsMidp || bIsUc7 || bIsUc || bIsAndroid || bIsCE || bIsWM) {
location.href="https://www.baidu.com";
// document.writeln("phone");
}
else {
document.writeln("pc");
}
}
browserRedirect();
方法2，使用正则来判断：
document.writeln("您的浏览设备为：");
if(/Android|webOS|iPhone|iPod|BlackBerry/i.test(navigator.userAgent)) {
document.writeln("phone");
} else {
document.writeln("pc");
}
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