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    "question_id": "8880393",
    "url": "\/study-help\/questions\/please-help-installed-the-moment-module-already-but-i-do-8880393",
    "question_creation_date_js": "2024-09-01T20:23:41-04:00",
    "question_creation_date": "Sep 01, 2024 08:23 PM",
    "meta_title": "[Solved] Please HELP!! Installed the moment module | SolutionInn",
    "meta_description": "Answer of - Please HELP!! Installed the moment module already but I do not know how to log the feedback comments on a separate fil | SolutionInn",
    "meta_keywords": "help,installed,moment,module,log,feedback,comments,separate,file,add,timestamp,one",
    "question_title_h1": "Please HELP!! Installed the moment module already but I do not know how to log the feedback comments on a separate file and how to",
    "question_title": "Please HELP!! Installed the moment module already but I do not know",
    "question_title_for_js_snippet": "Please HELP   Installed the moment module already but I do not know how to log the feedback comments on a separate file and how to add a timestamp to each one  Your job is to use NPM to download a free module called moment described in our textbook and use Node js built in fs module to log the customer feedback messages to a text file named feedback log   Each feedback has to be logged on its own line and has to be started with a time stamp in a pair of square brackets  See the following screenshot for the exact format      app js This is a simple web site that hosts a fake Wake Tech Credit Union web site  It is used to demonstrate how easy it is to create and deploy a web sever using Node js     var express   require('express')  var fs   require('fs')  var moment   require('  node modules moment')  app js       Define the sample application     var SampleApp   function ()      Scope  var self   this                                                                             Helper functions                                                                                  Set up server IP address and port   using env variables defaults     self setupVariables   function ()      Set the environment variables we need    self ipaddress   process env IP    self port   process env PORT    5000    if (typeof self ipaddress      undefined )      self ipaddress    127 0 0 1                 Populate the cache     self populateCache   function ()   if ( typeof self zcache      undefined )   self zcache     'index html'  ''         Local cache for static content  self zcache 'index html'    fs readFileSync('  index html')           Retrieve entry (content) from cache     param  string  key Key identifying content to retrieve from cache     self cache get   function (key)   return self zcache key            terminator     the termination handler   Terminate server on receipt of the specified signal     param  string  sig Signal to terminate on     self terminator   function (sig)  if ( typeof sig      string )   console log(' s  Received  s   terminating sample app    ', Date(Date now()), sig)  process exit(1)    console log(' s  Node server stopped ', Date(Date now()) )           Setup termination handlers (for exit and a list of signals)     self setupTerminationHandlers   function ()     Process on exit and signals  process on('exit', function ()   self terminator()   )     Removed 'SIGPIPE' from the list   bugz 852598   'SIGHUP', 'SIGINT', 'SIGQUIT', 'SIGILL', 'SIGTRAP', 'SIGABRT', 'SIGBUS', 'SIGFPE', 'SIGUSR1', 'SIGSEGV', 'SIGUSR2', 'SIGTERM'   forEach( function (element, index, array)   process on(element, function ()   self terminator(element)   )   )                                                                               App server functions (main app logic here)                                                                                  Create the routing table entries   handlers for the application     self createRoutes   function ()   self routes        self routes ' feedback'    function (req, res)   console log(    Received a customer feedback       req body feedback      )  res send(  WTCU Feedback setTimeout(function() window location href ' ' ,3000)  Thanks for your feedback   )     self routes ' '    function (req, res)   res setHeader('Content Type', 'text html')  res send(self cache get('index html') )              Initialize the server (express) and create the routes and register   the handlers     self initializeServer   function ()   self createRoutes()    self app   express createServer()  self app   express()  self app set('port', process env PORT    3333)  self app set('ip', process env IP     127 0 0 1 )  self app use(express static(  dirname))    self app use(express bodyParser())  self app use(express json())  self app use(express urlencoded())     Add handlers for the app (from the routes)  for ( var r in self routes)   self app get(r, self routes r )     maps the HTTP GET request self app post(r, self routes r )     maps the HTTP POST request            Initializes the sample application     self initialize   function ()   self setupVariables()  self populateCache()  self setupTerminationHandlers()     Create the express server and routes  self initializeServer()           Start the server (starts up the sample application)     self start   function ()      Start the app on the specific interface (and port)  self app listen(self app get('port'), function ()   console log(' s  Node server started on  s  d    ', Date(Date now() ), self app get('ip'), self app get('port'))   )           Sample Application           main()  Main code     var zapp   new SampleApp()  zapp initialize()  zapp start() ",
    "question_description": "<p>Please HELP!! Installed the moment module already but I do not know how to log the feedback comments on a separate file and how to add a timestamp to each one. <\/p> <p> <\/p> <p>Your job is to use NPM to download a free module called <strong>moment<\/strong> described in our textbook and use Node.js built-in <strong>fs<\/strong> module to log the customer feedback messages to a text file named <strong>feedback.log<\/strong>. Each feedback has to be logged on its own line and has to be started with a time stamp in a pair of square brackets. See the following screenshot for the exact format:<\/p> <pre><em>\/** <\/em><em>app.js <\/em><em>This is a simple web site that hosts <\/em><em>a fake Wake Tech Credit Union web site. <\/em><em>It is used to demonstrate how easy it is to <\/em><em>create and deploy a web sever using Node.js. <\/em><em>*\/ <\/em> <strong>var <\/strong>express = require('express'); <strong>var <\/strong>fs = require('fs'); <strong>var <\/strong>moment = require('.\/node_modules\/moment'); app.js <em>\/** <\/em><em> * Define the sample application. <\/em><em> *\/ <\/em><strong>var <\/strong>SampleApp = <strong>function<\/strong>() { \/\/ Scope. <strong>var <\/strong>self = <strong>this<\/strong>; \/* ================================================================ *\/ \/* Helper functions. *\/ \/* ================================================================ *\/ <em>\/** <\/em><em> * Set up server IP address and port # using env variables\/defaults. <\/em><em> *\/ <\/em><em> <\/em>self.setupVariables = <strong>function<\/strong>() { \/\/ Set the environment variables we need. \/\/self.ipaddress = process.env.IP; \/\/self.port = process.env.PORT || 5000; \/\/if (typeof self.ipaddress === \"undefined\") { \/\/ self.ipaddress = \"127.0.0.1\"; \/\/}; }; <em>\/** <\/em><em> * Populate the cache. <\/em><em> *\/ <\/em><em> <\/em>self.populateCache = <strong>function<\/strong>() { <strong>if <\/strong>(<strong>typeof <\/strong>self.zcache === \"undefined\") { self.zcache = { 'index.html': '' }; } \/\/ Local cache for static content. self.zcache['index.html'] = fs.readFileSync('.\/index.html'); }; <em>\/** <\/em><em> * Retrieve entry (content) from cache. <\/em><em> * <\/em><em>@param <\/em><em>{string} key Key identifying content to retrieve from cache. <\/em><em> *\/ <\/em><em> <\/em>self.cache_get = <strong>function<\/strong>(key) { <strong>return <\/strong>self.zcache[key]; }; <em>\/** <\/em><em> * terminator === the termination handler <\/em><em> * Terminate server on receipt of the specified signal. <\/em><em> * <\/em><em>@param <\/em><em>{string} sig Signal to terminate on. <\/em><em> *\/ <\/em><em> <\/em>self.terminator = <strong>function<\/strong>(sig){ <strong>if <\/strong>(<strong>typeof <\/strong>sig === \"string\") { console.log('%s: Received %s - terminating sample app ...', Date(Date.now()), sig); process.exit(1); } console.log('%s: Node server stopped.', Date(Date.now()) ); }; <em>\/** <\/em><em> * Setup termination handlers (for exit and a list of signals). <\/em><em> *\/ <\/em><em> <\/em>self.setupTerminationHandlers = <strong>function<\/strong>(){ \/\/ Process on exit and signals. process.on('exit', <strong>function<\/strong>() { self.terminator(); }); \/\/ Removed 'SIGPIPE' from the list - bugz 852598. ['SIGHUP', 'SIGINT', 'SIGQUIT', 'SIGILL', 'SIGTRAP', 'SIGABRT', 'SIGBUS', 'SIGFPE', 'SIGUSR1', 'SIGSEGV', 'SIGUSR2', 'SIGTERM' ].forEach(<strong>function<\/strong>(element, index, array) { process.on(element, <strong>function<\/strong>() { self.terminator(element); }); }); }; \/* ================================================================ *\/ \/* App server functions (main app logic here). *\/ \/* ================================================================ *\/ <em>\/** <\/em><em> * Create the routing table entries + handlers for the application. <\/em><em> *\/ <\/em><em> <\/em>self.createRoutes = <strong>function<\/strong>() { self.routes = { }; self.routes['\/feedback'] = <strong>function<\/strong>(req, res) { console.log(\"-- Received a customer feedback: [\" + req.body.feedback + \"]\"); res.send(\"<html><head><title>WTCU Feedback<\/title><script>setTimeout(function(){window.location.href='\/'},3000);<\/script><\/head><body>Thanks for your feedback!<\/body><\/html>\"); }; self.routes['\/'] = <strong>function<\/strong>(req, res) { res.setHeader('Content-Type', 'text\/html'); res.send(self.cache_get('index.html') ); }; }; <em>\/** <\/em><em> * Initialize the server (express) and create the routes and register <\/em><em> * the handlers. <\/em><em> *\/ <\/em><em> <\/em>self.initializeServer = <strong>function<\/strong>() { self.createRoutes(); \/\/self.app = express.createServer(); self.app = express(); self.app.set('port', process.env.PORT || 3333); self.app.set('ip', process.env.IP || \"127.0.0.1\"); self.app.use(express.static(__dirname)); \/\/self.app.use(express.bodyParser()); self.app.use(express.json()); self.app.use(express.urlencoded()); \/\/ Add handlers for the app (from the routes). <strong>for <\/strong>(<strong>var <\/strong>r <strong>in <\/strong>self.routes) { self.app.get(r, self.routes[r]); \/\/ maps the HTTP GET request self.app.post(r, self.routes[r]); \/\/ maps the HTTP POST request } }; <em>\/** <\/em><em> * Initializes the sample application. <\/em><em> *\/ <\/em><em> <\/em>self.initialize = <strong>function<\/strong>() { self.setupVariables(); self.populateCache(); self.setupTerminationHandlers(); \/\/ Create the express server and routes. self.initializeServer(); }; <em>\/** <\/em><em> * Start the server (starts up the sample application). <\/em><em> *\/ <\/em><em> <\/em>self.start = <strong>function<\/strong>() { \/\/ Start the app on the specific interface (and port). self.app.listen(self.app.get('port'), <strong>function<\/strong>() { console.log('%s: Node server started on %s:%d ...', Date(Date.now() ), self.app.get('ip'), self.app.get('port')); }); }; }; \/* Sample Application. *\/ <em>\/** <\/em><em> * main(): Main code. <\/em><em> *\/ <\/em><strong>var <\/strong>zapp = <strong>new <\/strong>SampleApp(); zapp.initialize(); zapp.start();<\/pre> <p> <\/p> <p> <\/p>",
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    "related_book": {
        "title": "Object Databases The Essentials",
        "isbn": "020156341X, 978-0201563412",
        "edition": "1st Edition",
        "authors": "Mary E. S. Loomis",
        "cover_image": "https:\/\/dsd5zvtm8ll6.cloudfront.net\/si.question.images\/book_images\/64ed95dae1cff_47869.jpg",
        "uri": "\/textbooks\/object-databases-the-essentials-1st-edition-9780201563412",
        "see_more_uri": "\/textbooks\/computer-science-yorick-2550"
    },
    "question_posted": "2024-09-01 20:23:41",
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