nodejs typescript tutorial

crawled content location with jquery syntax so that the crawler is implemented!Run node demo.js using the command line and access the Localhost:3000/index in the browser The results are tips: Some sites are not utf-8 encoding mode,At this time can use Iconv-lite to remove the gb2312 garbled problem of course, each site has anti-crawler function, you can study how to simulate a normal user to circumvent some of the problems (Baidu's Chinese search will also be blocked) This article is just a pri

Tags: node. js Nodejs mysql xampp econnrefusedHere's how to connect a native MySQL database via node. JS:var mysql = require (' mysql '); var connection = Mysql.createconnection ({ host : ' localhost ', user : ' XXXX ',//Here is the XXXX replacement for your MySQL login username password: ' xxxx ',//here xxxx is replaced with your MySQL login password database: ' xxxx ',// The XXXX here is replaced with the database name you want to connec

codeFile IO operations, which improve node. JS performance, can handle a large number of concurrent requests.Blocking is performed sequentially, and non-blocking is not required sequentially. ReadFile and Readfilesync.6.nodejs when writing the Chinese format, it is necessary to change the Utf-8 encoding to display the characters.7.node.js event Loop.Each API is asynchronous and runs as a separate thread, using an asynchronous function call, and handl

variable Set Set is used to specify the value of a variable.App.set ("View Engine", "Ejs");//use Ejs as Template 9.response Object method . REDIRECT redirect Response.Redirect ("/hello/anime");//Redirect to/hello/anime . send File Sendfile Response.sendfile ("/path/to/anime.mp4"); Renders the page template render, which loads the transformed content onto the Web page.Response.render ("index", {message: "Hello World"})//Pass the message variable to the index template with the value "Hello

test connection in the current directory:varOracleDB = require (' OracleDB '));varConfig ={User:‘******‘,//user name password:‘******‘,//passwordIP: Database IP address, port: Database ports, SCHEMA: Database name connectstring:"Ip:port/schema"};oracledb.getconnection (config,function(err, connection) {if(Err) {console.error (err.message); return; }Query a table 10 data test, pay attention to replace your table name Connection.Execute ("SELECT * FROM (select A.*, ROWNUM rn from (SELECT * from y

This article mainly introduces Nodejs simple getting started tutorial (3): process. This article describes the communication between Node processes and cluster modules, for more information, see Node. Although there are multiple threads, JavaScript running on v8 is single-threaded. The child_process module of Node is used to create sub-processes. We can use the sub-processes to make full use of the CPU. Exa

Nodejs uses the mysql tutorial in xampp, nodejsxampp The following describes how to connect to the mysql database of the local machine through node. js: Var mysql = require ('mysql'); var connection = mysql. createConnection ({host: 'localhost', user: 'xxxx', // replace xxxx with your mysql login Username password: 'xxxx ', // replace xxxx with your mysql logon Password database: 'xxxx', // replace xxxx

Warning window pops up, click Run to start the Installation Wizard and click Next to start the installation.After the installation is complete, node. js can be used through the command line interface (Commond-line INTERFACE,CLI) provided by node. js.Execute the following command in the command-line tool:$ nodeThis launches the node. JS command-line interface, which can receive input from JavaScript statements. Test whether the installation was successful,Run the following command:> Console.log

Nodejs mysql tutorial in xampp The following describes how to connect to the mysql database of the local machine through node. js: Var mysql = require ('mysql'); var connection = mysql. createConnection ({host: 'localhost', user: 'xxxx', // replace xxxx with your mysql login Username password: 'xxxx ', // replace xxxx with your mysql logon Password database: 'xxxx', // replace xxxx with the database nam