Node.js Core Modules Core Modules The modules do need to use NPM install

tags: node.js js

The modules do need to use NPM install:

These modules installed locally with you install NODE js

1. Path module

LOAD:

var path = require("path")

Using:

path.basename(__filename) # pluck out the file name from the path

path.join(*args) join a series of path name with "/"

2. Utilie module

var util = require("util)

util.log() have a same result as console.log(), but it has log the time of the code loading time staple

//++++++++++++++

util.inherits(object1, ob2)

help ob1 to inherits all of function in ob2

3. V8

Get current memory

var v8 = require("v8")

util.log(v8.getHeapStatistics())

=========================================================================

4. Reading module

ask question to user in termial and saving those answers

var readline = require('readline')

var rl = readline.createInterface(process.stdin, process.stout)

# readline helps us to control thoes object 

rl.question(string, function(answer))

# ask question

# handle the answer

rl.setPrompt('');

in the question() function to repeat the question prompt

5. EventEmitter

require('events');

var emitter = new events.EventEmitter();

emitter.on('customEvent', function(string));

emitter.emit('customEvent', string1)

emit will push the second argument into customEvent and run it! \

Intelligent Recommendation

Spring----seven core modules

Spring—seven core modules [Core Container] The core container provides the basic functionality of the Spring framework. Spring organizes and manages the various components and their relationship...

The core container (Spring core) The core container provides the basic functionality of the Spring framework. Spring bean to the way the various components and their relationships to organize and mana...

node in the core modules of the fs

Implementation file contents by fs module copy: used api: fs.open(path[, flags[, mode]], callback) fs.read(fd, buffer, offset, length, position, callback) fs.write(fd, buffer[, offset[, length[, posit...

Spring-seven core modules

Architecture diagram: Seven core modules: Core container (Spring Core): Core package is the most basic part of the framework, providing IOC and dependency injection features. The basic concept here is...

Node's core modules

Commonly used node core modules: os, http, fs, path, url, querystring, crypto Node.js operating system (os module) Obtain computer system related information Node.js network module (http module) You c...