How to have a sequence of conclusions??

Question

Node.js

Can't figure out async in nodejs.
I took this example:

function display(data, callback){
    setTimeout(function(){
        callback(null, data);
    }, 0);
}
console.log("Начало работы программы");
display("Обработка данных...", function (err, data){
    if(err) throw err;
    console.log(data);
});
console.log("Завершение работы программы");

How can I make the methods execute sequentially?
For example, if we used the place of display db, how would it be?

Answer 1

No way. Synchronous code is executed first, then asynchronous. You can put the completion in a callback, then it will be executed asynchronously after processing the data.