如何用nodejs操作MySql数据呢，其实写法还是简单的，

1.开始在你的node项目中 npm install mysql --save

2.在你的新建项目中 引入代码

//引入数据库

var mysql=require('mysql');

//实现本地链接

var connection = mysql.createConnection({

host: 'localhost',

user: 'yf',

password: '123456',

database: 'yf'

})

最好不好是用root 会产生冲突

3. 之后就是增删改查啦，附上代码

查询

// 查找

function select() {

connection.connect(function (err) {

if (err) {

console.error('error connecting:' + err.stack)

}

console.log('connected as id ' + connection.threadId);

})

connection.query('SELECT * FROM demo', function (error, results, fields) {

if (error) throw error;

console.log('The solution is:', results);

});

connection.end();

}

添加

//添加

function add() {

let post = {

id: 1,

name: 'Hello MySql',

age: 20,

time: Date.now(),

temp: 'deom'

};

let query = connection.query("INSERT INTO demo SET ?", post, function (error, results, fields) {

if (error) throw error;

})

console.log(query.sql); //INSERT INTO posts 'id'=1, 'title'='Hello MySQL'

}

修改

//修改

function updeate() {

connection.connect(function (err) {

if (err) {

console.error('error connecting:' + err.stack);

}

console.log('connected as id ' + connection.threadId);

});

connection.query('UPDATE demo SET name=?where id?', ['update', 1], function (error, results, fields) {

if (error) throw error;

console.log('changed:' + results.changeRows + 'rows');

});

connection.end();

}

删除

//删除

function deletes() {

connection.connect(function (err) {

if (err) {

console.error('error connecting:' + err.stack);

return;

}

connection.query('DELETE FROM demo SET where id=?', [ 1], function (error, results, fields) {

if (error) throw error;

console.log('deleted:' + results.affectedRows + 'rows');

});

console.log('connected as id ' + connection.threadId);

connection.end();

});

}

是不是很简单啊 只要在你需要的地方添加方法名和对应的参数 ，就可以了