advantages of node js

This article mainly introduces Node. example of calling the mysql stored procedure in js. this article passes the test in the windows environment. This article also provides examples of creating a database, inputting data, creating a stored procedure, and calling a stored procedure, for more information, see the example below. it is only tested in windows and not in linux. If you have any questions, please

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 ('

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

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

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

//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

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 crawls bean data instance analysis, node. js instance analysis I have always thought that my vue is okay, and I have always thought that my webpack is okay. Today, when I visited node in MOOC, I found that I am still far away. As we all know, vue-cli is based on web

This article mainly shares with you the node. js public platform development tutorial. If you are interested, please refer to it. How can nodejs be used to develop public platforms? Let's not talk about anything more. First, let's briefly introduce the basic principles of the public platform. The server is equivalent to a forwarding server. A terminal (such as a mobile phone or tablet) initiates a request

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. 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. 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

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 );}}

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 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

Node. js removes BOM headers in batches and node. js removes bom My colleagues wrote a tool, but there is a bug that after the file is replaced, the format of the original file is changed to utf8 BOM. XML with BOM may not be readable on Mac, therefore, you need to write a tool for processing. In fact, the idea is rela