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node. js aitaotu Image Bulk download node. JS Crawler version 1.00

Even HTTPS Web pages, the way of parsing is not consistent, you need to try more.Code://======================================================//aitaotu Image Bulk download node. JS Crawler 1.00//November 14, 2017//======================================================//built-in HTTP modulevarHttps=require ("https");//built-in file processing module for creating directories and picture filesvarFs=require ('

Node. js implements port forwarding and node. js port forwarding

Node. js implements port forwarding and node. js port forwarding This article shares the node. js port forwarding implementation code for your reference. The specific content is as follows: #!/sbin/

[node. js] Pass command line arguments to node. js

Command line arguments is often used to modify the behavior of a application or specify needed parameters for operation. In this lesson, you'll learn how to access the command line arguments passed to your node. JS application as well as dif Ferent strategies for evaluating and accessing them.To catch what arguement user passed on from command line, we can use 'process.argv '.If We log out:// Server.js Cons

Static class objects in node. js Inheritance (some bug fixes in the "node. JS Development Walkthrough" book)

Today is a good gas, recently hung up some interview after a slight loss of mood.God Horse is a cloud, to always do the world second.No more, you ask me why the mentality has changed. -------are feelings,.Well, I'm studying node recently.People ask, you have this level of node ...hahaha, so sad ....Don't mention it.God Horse modular God horse is not much to say, on a module.export and export differences, th

Use node. js to create website front-end backend _ node. js

This article will introduce you to the front-end and back-end of the practical node. js website, which is very detailed. If you need it, you can refer to what node. js can do? I still don't know where he is widely used, and I have no chance to access such a project. Just because I like it, I made a website and backgrou

Node. js obtains data from the database and node. js database.

Node. js obtains data from the database and node. js database. In this article, we need to use node. js as a small function to obtain data from Sqlserver and display the data on the page. Here we will share with you:App.

Introduction to using Redis in Node. js applications _ node. js

This article mainly introduces. the Redis method is used in js applications, and the simplest data read/write operations are related. if you need it, please ensure that Redis and Node are installed before you start this article. js and Node. redis extension of js -- node_red

Great routine analysis of node. js Reading Notes, node. js Reading Notes

Great routine analysis of node. js Reading Notes, node. js Reading Notes This week, nodejs learned how to use several dependent packages and used all the examples in the book. This article takes the routine as a clue to review the work of the week. 1. connect This routine mainly uses the connect dependency package. con

Node. js: Stream module _ node. js

The fs module of nodejs does not provide a copy method, but we can easily implement one. this method is to read all the file content into the memory and then write the file, this is not a big problem for small text files, such as grunt-file-copy. I. opening analysis Stream is an abstract interface implemented by many objects in Node. For example, a request to an HTTP server is a stream, and stdout is also a stream. Stream is readable, writable, or bo

Node. js: Stream module _ node. js

The fs module of nodejs does not provide a copy method, but we can easily implement one. This method is to read all the file content into the memory and then write the file, this is not a big problem for small text files, such as grunt-file-copy. I. Opening Analysis Stream is an abstract interface implemented by many objects in Node. For example, a request to an HTTP server is a stream, and stdout is also a stream. Stream is readable, writable, or bo

Node. js removes the evil information in the torrent file _ node. js

required for BT download and the settings for the Tracker server. The file information is generated based on the calculation of the target file, the calculation result is encoded according to the Bencode rules in the BitTorrent protocol. The main principle is to divide the downloaded files into equal blocks, which must be an integer of 2 K to the power of 2 k (because it is a virtual block, files are not generated on the hard disk), and the index information and Hash Verification Code of each b

[node. js] node. js Buffers

//Not equalBuf1.compare (BUF3)0//Equalbuf1.equals (BUF2)false>>vararr =[Buf1, Buf2]>>Arr.sort (buffer.compare) [ ]>>Buf.tojson () {type:' Buffer ', data: [104, 101, 121, 101, 108]}>> buf =NewBuffer (' Hello world! ');>> buf2 0 Buf.slice (0,3) buf2.tostring ();' Hel 'In this lesson, we cover the node. JS Buffer object in detail. Not only would you learn that the buffer object was a reference to a memory spac

Node. js asynchronous programming _ node. js

This article describes in detail the classification of node. js asynchronous programming and the problems existing in asynchronous programming, which are very detailed and meticulous. We recommend this article to our friends. Currently, a large number of asynchronous operations are required, and actual pages are more and more inclined to be single-page applications. Backbone, angular, knockout and other fra

Node + express + ejs simple page Getting Started Guide _ node. js-js tutorial

This article records the whole process of using node + express + ejs to create a simple page. It is really hard to say that express + ejs is really difficult, and there is a kind of sorrow ~ 1. Create the project folder my_ejs. 2. Use npm install express and npm install ejs Download these two guys. As for whether or not to set them to global, I am used to downloading them to the folder my_ejs in this project. Then create the corresponding file:

Node. js emitter. emit method instructions, node. js Use Cases

Node. js emitter. emit method instructions, node. js Use Cases Method description: When an event is triggered, several optional parameters are passed to the parameter table of the event listener. Syntax: Copy codeThe Code is as follows:Emitter. emit (event, [arg1], [arg2], [...]) Receiving parameters: Event Type Arg1 ~

The console. time Method in node. js is used in node. js scenarios.

The console. time Method in node. js is used in node. js scenarios. Method description: Start Time, which corresponds to console. timeEnd and records the time period. Syntax: Copy codeThe Code is as follows:Console. time (label) Receiving parameters: The Label corresponds to the label of console. log at the start

The console. timeEnd method in node. js is used in node. js scenarios.

The console. timeEnd method in node. js is used in node. js scenarios. Method description: Completion time: the time spent between console. time and console. timeEnd. Syntax: Copy codeThe Code is as follows:Console. timeEnd (label) Receiving parameters: The Label corresponds to the label of console. log at the st

Node. js [superAgent] request example _ node. js

This article mainly introduces node. the js [superAgent] request usage example summarizes the post request, get request, delete request, and put request examples, and recommends them to you. Post request: The code is as follows: Request. post ('/api/pet '). End (function (resp, err ){If (resp. body. status === 200 ){Alert ('Yay got '+ JSON. stringify (res. body ));} Else {Return next (resp. body );}}

Create a web calculator _ node. js using node. js + express

This article describes how to create a web calculator using node. js + express. For more information, see Environment: Host: WIN10 Express installation: 1. install express-generator Enter the following command: npm install -g express-generator 2. install express Enter the following command: npm install -g express 3. verify whether the installation is successful Enter the command: express-V View help: e

Node. js Data Encryption Transmission Analysis, node. js Data Encryption

Node. js Data Encryption Transmission Analysis, node. js Data Encryption Preface For encrypted data transmission, there are several methods that people often use. One is ciphertext transmission, and the other is ciphertext transmission. The other is to encrypt data using keys and decrypt data using public keys, the tra

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