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Nächste Überarbeitung		Vorhergehende Überarbeitung
pub:node.js [2014/06/24 09:17] – angelegt Marco Kragepub:node.js [2017/09/27 13:26] (aktuell) – Marco Krage
Zeile 1: Zeile 1:
 ====== Node.js ====== ====== Node.js ======
 +
 +
 +===== dirty =====
 +Key Value Database ([[https://www.npmjs.org/package/dirty|npmjs.org]])
 +<code javascript>
 +var dirty = require('dirty');
 +var db = dirty('/store.db');
 +var data = db.get('foobar');
 +db.set('foobar', "some content");
 +</code>
 +
 +===== request =====
 +HTTP Requests ([[https://www.npmjs.org/package/request|npmjs.org]])
 +<code javascript>
 +var request = require('request');
 +request(url, function (error, response, html) {
 +  if (error || response.statusCode != 200) { console.error(error, response); return false;}
 +  console.log(html);
 +});
 +</code>
 +
 +===== cheerio =====
 +jQuery like DOM Parser ([[https://www.npmjs.org/package/cheerio|npmjs.org]])
 +<code javascript>
 +var cheerio = require('cheerio');
 +var $ = cheerio.load(body);
 +</code>
 +
 +===== underscore =====
 +Utiliys ([[https://www.npmjs.org/package/underscore|npmjs.org]])
 +<code javascript>
 +var _ = require('underscore');
 +</code>
 +
 +===== dialog =====
 +Window Prompts ([[https://www.npmjs.org/package/dialog|npmjs.org]])
 +<code javascript>
 +var dialog = require('dialog');
 +dialog.info("text", "title");
 +
 +
 +
 +===== commander =====
 +Commandline Parameter ([[https://www.npmjs.org/package/commander|npmjs.org]])
 +<code javascript>
 +var argv = require('commander');
 +
 +argv
 +  .version('0.0.1')
 +  .option('-p, --peppers', 'Add peppers')
 +  .option('-c, --cheese [type]', 'Add type of cheese [marble]', 'marble')
 +  .parse(process.argv);
 +
 +console.log('you ordered a pizza with:');
 +if (argv .peppers) console.log('  - peppers');
 +console.log('  - %s cheese', program.cheese);
 +</code>
 +
 +
 +===== prompt =====
 +Userinput Abfrage ([[https://www.npmjs.org/package/prompt|npmjs.org]])
 +
 +<code javascript>
 +var prompt = require('prompt');
 +prompt.get(['username', 'email'], function (err, result) {
 +  console.log('Command-line input received:');
 +  console.log('  username: ' + result.username);
 +  console.log('  email: ' + result.email);
 +});
 +</code>
 +
 +
 +
 +===== fs-extra =====
 +Extra FileSystem tools ([[https://www.npmjs.org/package/fs-extra|npmjs.org]])
 +
 +<code javascript>
 +var fs = require('fs-extra')
 + 
 +// Async with promises:
 +fs.copy('/tmp/myfile', '/tmp/mynewfile')
 +  .then(() => console.log('success!'))
 +  .catch(err => console.error(err))
 + 
 +// Async with callbacks:
 +fs.copy('/tmp/myfile', '/tmp/mynewfile', err => {
 +  if (err) return console.error(err)
 +  console.log('success!')
 +})
 + 
 +// Sync:
 +try {
 +  fs.copySync('/tmp/myfile', '/tmp/mynewfile')
 +  console.log('success!')
 +} catch (err) {
 +  console.error(err)
 +}
 +</code>
 +
 +===== mime =====
 +MIME-Type ([[https://www.npmjs.org/package/mime|npmjs.org]])
 +https://www.npmjs.org/package/mime
 +
 +<code javascript>
 +var mime = require('mime');
 +
 +mime.lookup('/path/to/file.txt');         // => 'text/plain'
 +mime.lookup('file.txt');                  // => 'text/plain'
 +mime.lookup('.TXT');                      // => 'text/plain'
 +mime.lookup('htm');                       // => 'text/html'
 +</code>
 +
  
 ===== async ===== ===== async =====
-https://www.npmjs.org/package/async+Queue, Warteschlange ([[https://www.npmjs.org/package/async|npmjs.org]]) 
 <code javascript> <code javascript>
 var async = require('async'); var async = require('async');
Zeile 20: Zeile 133:
 } }
 </code> </code>
 +
  
 ===== socket.io ===== ===== socket.io =====
-https://www.npmjs.org/package/socket.io+Realtime Web Communication ([[https://www.npmjs.org/package/socket.io|npmjs.org]])
  
 <code javascript server.js> <code javascript server.js>
Zeile 39: Zeile 153:
 io.on('connection', function (socket) { io.on('connection', function (socket) {
   socket.on('say', function (data) {   socket.on('say', function (data) {
-    //socket.emit('message', data); // send to all +    // send to current request socket client 
-    socket.broadcast.emit('message', data); // send to all other+    socket.emit('message', "this is a test"); 
 + 
 +    // sending to all clients, include sender 
 +    io.sockets.emit('message', "this is a test"); 
 + 
 +    // sending to all clients except sender 
 +    socket.broadcast.emit('message', "this is a test"); 
 + 
 +    // sending to all clients in 'game' room(channel) except sender 
 +    socket.broadcast.to('game').emit('message', 'nice game'); 
 + 
 +    // sending to all clients in 'game' room(channel), include sender 
 +    io.sockets.in('game').emit('message', 'cool game'); 
 + 
 +    // sending to individual socketid 
 +    io.sockets.socket(socketid).emit('message', 'for your eyes only');
   });   });
 }); });
Zeile 59: Zeile 188:
   </body>   </body>
 </html> </html>
 +</code>
 +
 +
 +===== mkdirp=====
 +([[https://www.npmjs.org/package/mkdirp|npmjs.org]])
 +
 +<code javascript>
 +var mkdirp = require('mkdirp');
 +
 +mkdirp('./tmp/foo/bar/baz', function (err) {
 +    if (err) console.error(err)
 +    else console.log('pow!')
 +});
 +</code>
 +
 +===== validator =====
 +Eingabe Überprüfung ([[https://www.npmjs.org/package/validator|npmjs.org]])
 +
 +<code javascript>
 +var validator = require('validator');
 +validator.isEmail('foo@bar.com'); //=> true
 +</code>
 +
 +===== chalk =====
 +Farben/Colors in der Console ([[https://www.npmjs.org/package/chalk|npmjs.org]])
 +
 +<code javascript>
 +var chalk = require('chalk');
 +
 +// Combine styled and normal strings 
 +log(chalk.blue('Hello') + 'World' + chalk.red('!'));
 + 
 +// Compose multiple styles using the chainable API 
 +log(chalk.blue.bgRed.bold('Hello world!'));
 + 
 +// Pass in multiple arguments 
 +log(chalk.blue('Hello', 'World!', 'Foo', 'bar', 'biz', 'baz'));
 +
 +var error = chalk.bold.red;
 +var warning = chalk.keyword('orange');
 +console.log(error('Error!'));
 +console.log(warning('Warning!'));
 </code> </code>
pub/node.js.1403594265.txt.gz · Zuletzt geändert: (Externe Bearbeitung)