How to return value of promise using angular 2

Question

This is my promise function i need to return the value of rs.rows.item(0);

     public getCustomer()  : any
  {
        let  db =  window.sqlitePlugin.openDatabase({name: 'data.db', location: 'default'});
        return new Promise((resolve, reject) =>
        {
            db.transaction(function(tx)
            {
                tx.executeSql('SELECT * FROM customer ORDER BY customerId DESC LIMIT 1', [], function(tx, rs)
                {
                     return resolve(rs.rows.item(0));
                }, 
                function(tx, error) 
                {
                    console.log('SELECT error: ' + error.message);
                    reject(error);
                });
            });
        });    
  }

the return value i got an object like this image

i need to get like this example

var customer = getCustomer();
customer.name;
customer.email;

Answer 1

Promises provide us with abstractions that help us deal with the asynchronous nature of our applications. Since we don't know how much time will those operations take (and therefore, when is the data going to be available) you need to use the then() method to execute some code when the data is ready to be used:

this.getCustomer()
    .then((data) => {
        // Here you can use the data because it's ready
        // this.myVariable = data;
    })
    .catch((ex) => {
        console.log(ex);
    });