Chat Room | JavaScript 程式專案

{"id":36062,"student_id":1976,"content":"\nvar comments = [];\nvar name = prompt('What is your name ?') || 'Anonymous';\nvar id = Math.floor(Math.random()*1000000);\nvar users = {};\n\nusers[id] = {\n    id: id,\n    name: name,\n    time: Date.now()\n}\n\nforever(function(){\n\n    users[id].time = Date.now();\n    DB.broadcast('update', users[id]);\n\n    for (var i=0; i\u003ccomments.length; i++) {\n        print(comments[i], 150, 20*i + 50);\n    }\n\n    print('===Online Users===');\n    print('Click Screen to Start chatting !',230,10);\n    var i=0;\n    for (var _ in users) {\n        i++;\n        print(users[_].name, 10, 10 + 20*i);\n        if (Date.now() \u003e users[_].time + 1000) {\n            addMsg(users[_].name + ' leave the chat room.');\n            delete users[_];\n        }\n    }\n});\n\nwhen('click', function () {\n    var msg = name + '：' + prompt('What do your want to say ?')\n    addMsg(msg);\n    DB.broadcast('message', msg);\n})\n\nDB.onMessage('update', function (data) {\n    if (users[data.id] == undefined) {\n        addMsg(data.name + ' join the chat room.');\n    }\n    users[data.id] = data;\n});\n\nDB.onMessage('message', function (data) {\n    comments.unshift('【' + (new Date).toLocaleTimeString('en-US') + '】' + data);\n});\n\nfunction addMsg (str) {\n    comments.unshift('【' + (new Date).toLocaleTimeString('en-US') + '】' + str);\n}\n","created_at":"2018-07-23T00:47:04.330+08:00","updated_at":"2019-10-26T22:29:15.109+08:00","name":"Chat Room","language":"javascript","screenshot":{"url":"https://cdn4.koding.school/uploads/project/screenshot/36062/2af7b96d760d7c8ef38b85c5c90890fa.jpg"},"parent_id":34007,"plugin":"","description":null,"note":null,"status":"public","like_student_ids":[],"is_featured":false,"views":374,"hashid":"882sn8ge","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}