JS 判断移动端 ，跳转

function SetPlatForm() {
    var JumpUrl = "";
    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";
    var ua = window.navigator.userAgent.toLowerCase();
    var url = location.href.toLowerCase();
    if ((bIsIpad || bIsIphoneOs || bIsMidp || bIsUc7 || bIsUc || bIsAndroid || bIsCE || bIsWM)) {
       JumpUrl = url.replace(location.host.toLowerCase(), 'm.xxx.com');
        window.location.href = JumpUrl;
    }else{
     JumpUrl = url.replace(location.host.toLowerCase(), 'www.xxx.com');
     window.location.href = JumpUrl;
    }
}