如何获取每条数据的 URL？-解网

问：

我正在构建一个基于 Firebase 的 IM 平台，我希望每个用户都能获得一个将他们引导至聊天室的地址。

http://chatt3r.sitecloud.cytanium.com/

火力基地

我为我曾经制作的 Firebase 应用程序这样做了。您需要做的第一件事是使用该方法。将聊天室推送到 Firebase，然后使用该方法获取推送的网址。一些快速的 JS 字符串操作 - - 其中“x”是您要截取 URL 的任何地方。将为您设置哈希值。将哈希添加到共享 URL，然后进行下一步：.push()toString()window.location.hash = pushRef.toString().slice(x)window.location.hash

当你打开页面时，你会想要一个哈希侦听器来检查是否已经有一个哈希，所以进入一个doc.ready函数，然后......$(window).bind('hashchange', function() {UpdateHash()})

function UpdateHash() {
    global_windowHash = window.hash.replace("#", "");
    // to assign the hash to a global hash variable
    if (global_windowHash) {
        // if there was already a hash
        chatRef = new Firebase("[Your Firebase URL here]" + "/chatrooms/" + global_windowHash);
        // chatRef is the global that you append the chat data to, and listen from.
    } else {
        // there wasn't a hash, so you can auto-create a new one here, in which case:
        chatRef = new Firebase("[Your Firebase URL here]" + "/chatrooms/");
        chatRef = chatRef.push();
        window.location.hash = chatRef.toString().slice(x);
    }
}

我希望这会有所帮助（并且:P有效）。如果有任何疑问或问题，请询问！

<head>

    <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
    <script src="https://cdn.firebase.com/v0/firebase.js"></script>

    <script>
        var hash; // global incase needed elsewhere

        $(function() {
            hash = window.location.hash.replace("#", "");;
            myRootRef = new Firebase("http://xxxx.firebaseio.com");

            var postingRef;

            if (hash) {
                // user has been given a hashed URL from their friend, so sets firebase root to that place
                console.log(hash);

                postingRef = new Firebase("http://xxxx.firebaseio.com/chatrooms/" + hash);
            } else {
                // there is no hash, so the user is looking to share a URL for a new room
                console.log("no hash");

                postingRef = new Firebase("http://xxxx.firebaseio.com/chatrooms/");
                // push for a unique ID for the chatroom
                postingRef = postingRef.push();
                // exploit this unique ID to provide a unique ID host for you app
                window.location.hash = postingRef.toString().slice(34);
            }

            // listener
            // will pull all old messages up once bound
            postingRef.on("child_added", function(data) {
                console.log(data.val().user + ": " + data.val().message);
            });
            // later:
            postingRef.push({"message": "etc", "user": "Jimmybobjimbobjimbobjim"});
        });
    </script>

</head>

这在本地对我有用。您需要将 xxxx 更改为您的任何 URL，并在 .slice（）位添加第一部分的任意字符数。

如何获取每条数据的 URL？

How can you get a url for every piece of data?

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