What are the methods for nodeJs to connect to mysql?

This time I will bring you nodeJs connectionmysqlWhat are the methods, what are thenotesfor connecting nodeJs to mysql, the following is a practical case, let's take a look.

mysql.js

//连接数据库 var mysql = require('mysql'); var pool = mysql.createPool({ host: 'localhost', user: 'root', password: 'gfdfsdf34r34r', database:'caiji' }); module.exports = function(sql, callback) { pool.getConnection(function(conn_err, conn) { if(conn_err) { callback(err,null,null); } else { conn.query(sql, function(query_err, rows, fields) { conn.release(); callback(query_err, rows, fields); }); } }); };

Call

var query = require("./mysql.js"); query(sql, function(err, rows, fields) { console.log(rows); });

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