使用js判断，客户端是手机还是PC

[javascript]代码库

//方法1：
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;
}


//方法2：
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();

//方法3：
<script type="text/javascript">
    var browser = {
        versions : function() {
            var u = navigator.userAgent, app = navigator.appVersion;
            return {//移动终端浏览器版本信息                                 
            trident : u.indexOf('Trident') > -1, //IE内核                                 
            presto : u.indexOf('Presto') > -1, //opera内核                                 
            webKit : u.indexOf('AppleWebKit') > -1, //苹果、谷歌内核                                 
            gecko : u.indexOf('Gecko') > -1 && u.indexOf('KHTML') == -1, //火狐内核                                
            mobile : !!u.match(/AppleWebKit.*Mobile.*/)
                    || !!u.match(/AppleWebKit/), //是否为移动终端                                 
            ios : !!u.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/), //ios终端                 
            android : u.indexOf('Android') > -1 || u.indexOf('Linux') > -1, //android终端或者uc浏览器                                 
            iPhone : u.indexOf('iPhone') > -1 || u.indexOf('Mac') > -1, //是否为iPhone或者QQHD浏览器                    
            iPad: u.indexOf('iPad') > -1, //是否iPad       
            webApp : u.indexOf('Safari') == -1,//是否web应该程序，没有头部与底部
            google:u.indexOf('Chrome')>-1
        };
    }(),
    language : (navigator.browserLanguage || navigator.language).toLowerCase()
    }
    document.writeln("语言版本: "+browser.language);
    document.writeln(" 是否为移动终端: "+browser.versions.mobile);
</script>