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December 17, 2014 02:59
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Chat Example (Firebase)
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| <html> | |
| <head> | |
| <script src="https://cdn.firebase.com/js/client/2.0.4/firebase.js"></script> | |
| <script src='https://ajax.googleapis.com/ajax/libs/jquery/1.9.0/jquery.min.js'></script> | |
| <link rel="stylesheet" type="text/css" href="/resources/tutorial/css/example.css"> | |
| </head> | |
| <body> | |
| <!-- CHAT MARKUP --> | |
| <div class="example-chat l-demo-container"> | |
| <header>Firebase Chat Demo</header> | |
| <div class='example-chat-toolbar'> | |
| <label for="nameInput">Username:</label> | |
| <input type='text' id='nameInput' placeholder='enter a username...'> | |
| </div> | |
| <ul id='example-messages' class="example-chat-messages"></ul> | |
| <footer> | |
| <input type='text' id='messageInput' placeholder='Type a message...'> | |
| </footer> | |
| </div> | |
| <!-- CHAT JAVACRIPT --> | |
| <script> | |
| // CREATE A REFERENCE TO FIREBASE | |
| var messagesRef = new Firebase('https://an22sj9l915.firebaseio-demo.com/'); | |
| // REGISTER DOM ELEMENTS | |
| var messageField = $('#messageInput'); | |
| var nameField = $('#nameInput'); | |
| var messageList = $('#example-messages'); | |
| // LISTEN FOR KEYPRESS EVENT | |
| messageField.keypress(function (e) { | |
| if (e.keyCode == 13) { | |
| //FIELD VALUES | |
| var username = nameField.val(); | |
| var message = messageField.val(); | |
| //SAVE DATA TO FIREBASE AND EMPTY FIELD | |
| messagesRef.push({name:username, text:message}); | |
| messageField.val(''); | |
| } | |
| }); | |
| // Add a callback that is triggered for each chat message. | |
| messagesRef.limitToLast(10).on('child_added', function (snapshot) { | |
| //GET DATA | |
| var data = snapshot.val(); | |
| var username = data.name || "anonymous"; | |
| var message = data.text; | |
| //CREATE ELEMENTS MESSAGE & SANITIZE TEXT | |
| var messageElement = $("<li>"); | |
| var nameElement = $("<strong class='example-chat-username'></strong>") | |
| nameElement.text(username); | |
| messageElement.text(message).prepend(nameElement); | |
| //ADD MESSAGE | |
| messageList.append(messageElement) | |
| //SCROLL TO BOTTOM OF MESSAGE LIST | |
| messageList[0].scrollTop = messageList[0].scrollHeight; | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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