js手机自适应跳转到App Store或者应用商店

$(function(){
     //不同端下载链接
     if ((navigator.userAgent.match(/iPhone/i)) || (navigator.userAgent.match(/iPod/i)) || (navigator.userAgent.match(/iPad/i)))
    {
        $("#openApp").attr('href', 'https://itunes.apple.com/us/app/yi-wang-quan-cheng/id875785098?l=zh&ls=1&mt=8');
        $("#dowbtn").attr('href', 'https://itunes.apple.com/us/app/yi-wang-quan-cheng/id875785098?l=zh&ls=1&mt=8');
    } else if (navigator.userAgent.match(/android/i)) {
        $("#openApp").attr('href', 'http://m.yiwang.com/android/yiwang.apk');
        $("#dowbtn").attr('href', 'http://m.yiwang.com/android/yiwang.apk');
    }
    var ua = navigator.userAgent.toLowerCase();
    if (ua.match(/MicroMessenger/i) == 'micromessenger')
    {
        if ((navigator.userAgent.match(/iPhone/i)) || (navigator.userAgent.match(/iPod/i)) || (navigator.userAgent.match(/iPad/i)))
        {
            $("#openApp").attr('href', 'http://a.app.qq.com/o/simple.jsp?pkgname=com.yiwang.mobile');
            $("#dowbtn").attr('href', 'http://a.app.qq.com/o/simple.jsp?pkgname=com.yiwang.mobile');
        } else {
            $("#openApp").attr('href', 'http://a.app.qq.com/o/simple.jsp?pkgname=com.yiwang.mobile');
            $("#dowbtn").attr('href', 'http://a.app.qq.com/o/simple.jsp?pkgname=com.yiwang.mobile');
        }
    }
})