我得到 Promise {<pennding> } 在 node.js 异步 function</pennding>

Question

I have this function on a class on nodejs. It is getting all rows on DB.

module.exports = class fooClass {
  static async fooFunc() {
    const mysql = require('mysql');
    const util = require('util');
    const conn = mysql.createConnection({
      host: 'localhost',
      user: 'root',
      password: '',
      database: 'dbname'
    });

    // node native promisify
    const query = util.promisify(conn.query).bind(conn);

    try {
      const rows = await query('SELECT * FROM `dbtable`');
      return rows;
    } finally {
      conn.end();
    }
  }
}

When I call this function,

let result = fooClass.fooFunc();
console.log(result);

I am getting this:

Promise { <pennding> }

I can use fooClass.fooFunc().then... but that will require me to add a callback function on then and that will require a lot of changes.

Is there any way we can get the rows by just calling let result = fooClass.fooFunc(); ?

Thanks in advance.

Answer 1

When function call is done within a function then you can write it as @Bravo has suggested:

let result = await fooClass.fooFunc();

Link for async/await

If you are calling it outside a function then:

(async function(){
   let result = await fooClass.fooFunc();
})();