聊天室 DEMO | JavaScript Programming Project | OrangeApple Learning Platform

{"id":15636,"student_id":10,"content":"var comments = [];\nvar name = prompt('名字?') || '匿名';\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 + 10);\n    }\n\n    print('===在線使用者===');\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 + 5000) {\n            addMsg(users[_].name + '離開了聊天室');\n            delete users[_];\n        }\n    }\n});\n\nwhen('click', function () {\n    var msg = name + '：' + prompt('?')\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 + '加入了聊天室');\n    }\n    users[data.id] = data;\n});\n\nDB.onMessage('message', function (data) {\n    addMsg(data);\n});\n\nfunction addMsg (str) {\n    comments.unshift('【' + (new Date).toLocaleTimeString() + '】' + str);\n}","created_at":"2017-03-01T20:52:04.729+08:00","updated_at":"2019-11-07T14:04:34.397+08:00","name":"聊天室 DEMO","language":"javascript","screenshot":{"url":"/uploads/project/screenshot/15636/4326eb8a5509f79f5afbe8895605f002.jpg"},"parent_id":2,"plugin":"var comments = [];\nvar name = prompt('名字?') || '匿名';\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 + 10);\n    }\n\n    print('===在線使用者===');\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 + 5000) {\n            addMsg(users[_].name + '離開了聊天室');\n            delete users[_];\n        }\n    }\n});\n\nwhen('click', function () {\n    var msg = name + '：' + prompt('?')\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 + '加入了聊天室');\n    }\n    users[data.id] = data;\n});\n\nDB.onMessage('message', function (data) {\n    addMsg(data);\n});\n\nfunction addMsg (str) {\n    comments.unshift('【' + (new Date).toLocaleTimeString() + '】' + str);\n}","description":null,"note":null,"status":"public","like_student_ids":[],"is_featured":false,"views":626,"hashid":"meysw8ye","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}