Home Web Front-end JS Tutorial Interaction sample code between NodeJS and Mysql_javascript skills

Interaction sample code between NodeJS and Mysql_javascript skills

May 16, 2016 pm 05:25 PM
nodejs

Install Mysql Module into NodeJS

Js code

Copy code The code is as follows:

$npm install Mysql

JS script mysqlTest.js
Js code
Copy code The code is as follows:

// mysqlTest.js
//Load mysql Module
var Client = require('mysql').Client,
client = new Client( ),
 
//The name of the database to be created
TEST_DATABASE = 'nodejs_mysql_test',
//The name of the table to be created
TEST_TABLE = 'test';

/ /Username
client.user = 'root';
//Password
client.password = 'root';
//Create connection
client.connect();

client.query('CREATE DATABASE ' TEST_DATABASE, function(err) {
if (err && err.number != Client.ERROR_DB_CREATE_EXISTS) {
throw err;
}
}) ;

// If no callback is provided, any errors will be emitted as `'error'`
// events by the client
client.query('USE ' TEST_DATABASE);
client.query(
'CREATE TABLE ' TEST_TABLE
'(id INT(11) AUTO_INCREMENT, '
'title VARCHAR(255), '
'text TEXT, '
'created DATETIME, '
'PRIMARY KEY (id))'
);

client.query(
'INSERT INTO ' TEST_TABLE ' '
'SET title = ?, text = ?, created = ?',
['super cool', 'this is a nice text', '2010-08-16 10:00:23']
);

var query = client.query(
'INSERT INTO ' TEST_TABLE ' '
'SET title = ?, text = ?, created = ?',
['another entry', 'because 2 entries make a better test ', '2010-08-16 12:42:15']
);

client.query(
'SELECT * FROM ' TEST_TABLE,
function selectCb(err, results, fields) {
if (err) {
throw err;
}

console.log(results);
console.log(fields);
client.end ();
}
);

Execute script
Js code
Copy code The code is as follows:

root@sammor-desktop:/var/iapps/nodejs/work# node mysqlTest.js

Interaction sample code between NodeJS and Mysql_javascript skills
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Hot Topics

Java Tutorial
1664
14
PHP Tutorial
1266
29
C# Tutorial
1239
24
The difference between nodejs and vuejs The difference between nodejs and vuejs Apr 21, 2024 am 04:17 AM

Node.js is a server-side JavaScript runtime, while Vue.js is a client-side JavaScript framework for creating interactive user interfaces. Node.js is used for server-side development, such as back-end service API development and data processing, while Vue.js is used for client-side development, such as single-page applications and responsive user interfaces.

Is nodejs a backend framework? Is nodejs a backend framework? Apr 21, 2024 am 05:09 AM

Node.js can be used as a backend framework as it offers features such as high performance, scalability, cross-platform support, rich ecosystem, and ease of development.

What are the global variables in nodejs What are the global variables in nodejs Apr 21, 2024 am 04:54 AM

The following global variables exist in Node.js: Global object: global Core module: process, console, require Runtime environment variables: __dirname, __filename, __line, __column Constants: undefined, null, NaN, Infinity, -Infinity

How to connect nodejs to mysql database How to connect nodejs to mysql database Apr 21, 2024 am 06:13 AM

To connect to a MySQL database, you need to follow these steps: Install the mysql2 driver. Use mysql2.createConnection() to create a connection object that contains the host address, port, username, password, and database name. Use connection.query() to perform queries. Finally use connection.end() to end the connection.

What is the difference between npm and npm.cmd files in the nodejs installation directory? What is the difference between npm and npm.cmd files in the nodejs installation directory? Apr 21, 2024 am 05:18 AM

There are two npm-related files in the Node.js installation directory: npm and npm.cmd. The differences are as follows: different extensions: npm is an executable file, and npm.cmd is a command window shortcut. Windows users: npm.cmd can be used from the command prompt, npm can only be run from the command line. Compatibility: npm.cmd is specific to Windows systems, npm is available cross-platform. Usage recommendations: Windows users use npm.cmd, other operating systems use npm.

Is nodejs a back-end development language? Is nodejs a back-end development language? Apr 21, 2024 am 05:09 AM

Yes, Node.js is a backend development language. It is used for back-end development, including handling server-side business logic, managing database connections, and providing APIs.

Can nodejs write front-end? Can nodejs write front-end? Apr 21, 2024 am 05:00 AM

Yes, Node.js can be used for front-end development, and key advantages include high performance, rich ecosystem, and cross-platform compatibility. Considerations to consider are learning curve, tool support, and small community size.

Is there a big difference between nodejs and java? Is there a big difference between nodejs and java? Apr 21, 2024 am 06:12 AM

The main differences between Node.js and Java are design and features: Event-driven vs. thread-driven: Node.js is event-driven and Java is thread-driven. Single-threaded vs. multi-threaded: Node.js uses a single-threaded event loop, and Java uses a multi-threaded architecture. Runtime environment: Node.js runs on the V8 JavaScript engine, while Java runs on the JVM. Syntax: Node.js uses JavaScript syntax, while Java uses Java syntax. Purpose: Node.js is suitable for I/O-intensive tasks, while Java is suitable for large enterprise applications.

See all articles