Posts about Node.js
Introduction .js Node
May 10, 2021 22:00 0 Comment Node.js
Variable, Variable, The first Web server, curl, Wget, Attention, Node .js a platform for writing network systems and Web applications, built around an event-driven, non-blocking programming model., Run .js and Hello
Node.js ZLIB
May 10, 2021 22:00 0 Comment Node.js
Zlib, Zlib, Example, zlib.createGzip([options]), zlib.createGunzip([options]), zlib.createDeflate([options]), zlib.createInflate([options]), zlib.createDeflateRaw([options]), zlib.createInflateRaw([options]), zlib.createUnzip([options]), Class: zlib. Zlib, Class: zlib. Gzip, Class: zlib. Gunzip, Class: zlib. Deflate, Class: zlib. Inflate, Class: zlib. DeflateRaw, Class: zlib. InflateRaw, Class: zlib. Unzip, An easy way, zlib.deflate(buf[, options], callback), zlib.deflateSync(buf[, options]), zlib.deflateRaw(buf[, options], callback), zlib.deflateRawSync(buf[, options]), zlib.gzip(buf[, options], callback), zlib.gzipSync(buf[, options]), zlib.gunzip(buf[, options], callback), zlib.gunzipSync(buf[, options]), zlib.inflate(buf[, options], callback), zlib.inflateSync(buf[, options]), zlib.inflateRaw(buf[, options], callback), zlib.inflateRawSync(buf[, options]), zlib.unzip(buf[, options], callback), zlib.unzipSync(buf[, options]), Options, Use memory tuning, Constant, Zlib, 稳定性: 3 - 文档, This section describes the .js ZLIB module in the Node module, which you can access by:, var zlib = require('zlib');, This module p
Node .js virtual machines
May 10, 2021 22:00 0 Comment Node.js
The virtual machine, The virtual machine, vm.runInThisContext(code[, options]), vm.createContext([sandbox]), vm.isContext(sandbox), vm.runInContext(code, contextifiedSandbox[, options]), vm.runInNewContext(code[, sandbox][, options]), vm.runInDebugContext(code), Class: Script, The virtual machine, 稳定性: 3 - 稳定, This section describes the .js (VM) module of nodes, which provides an API for compiling and running code in the con
Node .js utility
May 10, 2021 22:00 0 Comment Node.js
Utility, Utility, util.debuglog(section), util.format(format[, ...]), util.log(string), util.inspect(object[, options]), util.isArray(object), util.isRegExp(object), util.isDate(object), util.isError(object), util.inherits(constructor, superConstructor), util.deprecate(function, string), util.debug(string), util.error([...]), util.puts([...]), util.print([...]), util.pump(readableStream, writableStream[, callback]), Utility, 稳定性: 4 - 锁定, This section describes the .js, 'util', module of the Node module, accessing the module through, require('util'), as follows:, c
Node.js UDP/Datagram
May 10, 2021 22:00 0 Comment Node.js
UDP/Datagram Sockets, UDP/Datagram Sockets, dgram.createSocket(type[, callback]), dgram.createSocket(options[, callback]), Class: dgram. Socket, UDP/Datagram Sockets, 稳定性: 3 - 稳定, Node .js's dgram module provides the implementation of the UDP datagram socket., The way to use datagram sockets is
Node .js process
May 10, 2021 22:00 0 Comment Node.js
Process, Process, Exit status code, Event: 'exit', Event: 'beforeExit', Event: 'uncaughtException', Signal event, process.stdout, process.stderr, process.stdin, process.argv, process.execPath, process.execArgv, process.abort(), process.chdir(directory), process.cwd(), process.env, process.exit([code]), process.exitCode, process.getgid(), process.setgid(id), process.getuid(), process.setuid(id), process.getgroups(), process.setgroups(groups), process.initgroups(user, extra_group), process.version, process.versions, process.config, process.kill(pid[, signal]), process.pid, process.title, process.arch, process.platform, process.memoryUsage(), process.nextTick(callback), process.umask([mask]), process.uptime(), process.hrtime(), process.mainModule, Process, This section describes .js process object that provides information and control about the .js Process process., process, is a global object t
How to enable cors in node.js without express cors?
Dec 01, 2021 16:00 0 Comment Node.js
As always, you first need to init a node app inside your project folder. This will create a package.json file inside the learn-cors directory on your PC. Now open the folder in the text editor of your choice. I use Visual Studio Code. $ code . The package.json will look something like this by defaul
Can you use node.js with facebook graph api?
Dec 03, 2021 10:00 0 Comment Node.js
The Graph API docs have no examples using vanilla JavaScript (although there are a few examples using their client-side SDK). At the time of this writing (March 12th, 2017), there are very few blog posts or tutorial on the topic. If you have some examples, using Facebook's Graph API with Node.js is
What is the purpose of mongoose in node.js?
Dec 08, 2021 05:00 0 Comment Node.js
Mongoose is an Object Data Modeling (ODM) library for MongoDB and Node.js. It manages relationships between data, provides schema validation, and is used to translate between objects in code and the representation of those objects in MongoDB.One may also ask, how is mongoose used in Node.js and Mong
Why do we need mongoose in node.js?
Dec 08, 2021 05:00 0 Comment Node.js
Elegant MongoDB object modeling for Node.js Let's face it, writing MongoDB validation, casting and business logic boilerplate is a drag. That's why we wrote Mongoose. Mongoose provides a straight-forward, schema-based solution to model your application data.Similarly, how did MongoDB get its name? T
How does node red contrib join ( node )-node-red?
Dec 08, 2021 15:00 0 Comment Node.js
Node-Red Node to join 2 or more messages. Messages from all input nodes are joined and put into the new payload. Since the messages might not arrive on the same time, there can be defined one input node as trigger. The input node that triggers must be defined by its topic.Accordingly, when do you ad
How long does it take a worker to move from node to node?
Dec 08, 2021 15:00 0 Comment Node.js
If a node’s Workload is 200, and a worker’s Work Speed is 100, then he will do the job in 2 ticks (20 minutes) plus the distance calculation. Movement Time = Distance/Movement speed * 2 Important for nodes located far away.Additionally, how long does it take to learn Node JS? If you have a strong pr
How to connect mqtt output node to node red?
Dec 08, 2021 15:00 0 Comment Node.js
Node-RED and the MQTT broker need to be connected. To connect the MQTT broker to Node-REd, double-click the MQTT output node. A new window pops up – as shown in figure below. Click the Add new mqtt-broker option. Type localhost in the server field.Subsequently, how to connect 2x MQTT nodes to Node-R
How to install node red contrib-binary ( node ) node-red?
Dec 08, 2021 15:00 0 Comment Node.js
A Node-RED node to parse and serialize binary data. npm install node-red-contrib-binary. Node-RED function that takes the msg.payload and converts it to/from binary data. Installation. Either use the Manage Palette option in the Node-RED Editor menu, or run the following command in your Node-RED use
Is the north node and true node the same thing?
Dec 08, 2021 15:00 0 Comment Node.js
The North Node is the same as the True Node. The North (or True) Node and the South Node are the Moon Nodes. Moon Nodes and Lunar Nodes are also the same. These nodes are your astrological key to harnessing the positive energy of the universe in your life.One may also ask, is the north node and true