IOS 网页能判断有没有安装应用，安装了就打开，没安装就去appstore下载吗

请大神告知如何实现呢

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http://blog.csdn.net/iunion/article/details/10327665/ 可以参考下

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谢谢 我到时试一试

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判断手机/平板是否安装app 如果安装 则调用app的scheme，传入url当作参数，来做后续操作 如果没有安装 则跳转到app store/google play 下载app

(function () {
    var openUrl = window.location.search;
    try {
        openUrl = openUrl.substring(1, openUrl.length);
    } catch (e) {}
    var isiOS = navigator.userAgent.match('iPad') || navigator.userAgent.match('iPhone') || navigator.userAgent.match(
        'iPod'),
        isAndroid = navigator.userAgent
            .match('Android'),
        isDesktop = !isiOS && !isAndroid;
    if (isiOS) {
        setTimeout(function () {
            window.location = "itms-apps://itunes.apple.com/app/[name]/[id]?mt=8";
        }, 25);
        window.location = "[scheme]://[host]?url=" + openUrl;
    } else if (isAndroid) {
        window.location = "intent://[host]/" + "url=" + openUrl + "#Intent;scheme=[scheme];package=[package_name];end";
    } else {
        window.location.href = openUrl;
    }
})();