Node JS code not running in order - sql

Question

I have no idea why the code do not run as I expected.
When the UserExist is called, it should either console.log one of the statements that I set in my function code.
But the result is like the following the picture. Apreciate that if somebody can help!!
Console
var sql = require('mssql');
var config = require('./configuration/sqlconfig');
var Username = "Testing";
sql.connect(config);
console.log("Connected to DB");
if (!UserExist(Username)) {
InsertNewRecord(Username);
}
function isEmptyObject(obj) {
return !Object.keys(obj).length;
}
// This should work both there and elsewhere.
function isEmptyObject(obj) {
for (var key in obj) {
if (Object.prototype.hasOwnProperty.call(obj, key)) {
return false;
}
}
return true;
}
function UserExist(Username) {
console.log('Checking whether user exists or not... ');
new sql.Request().query("SELECT * FROM dbo.DB_Users WHERE Username = '" + Username + "';")
.then(function (recordset) {
if (isEmptyObject(recordset)) {
console.log("The User does not exist, ready to insert");
return true;
} else {
console.log("The user is existed already.");
return false;
}
}).catch(function (err) {
//When errors come
});
}
function InsertNewRecord(Username) {
console.log('Attempting to Insert records...');
new sql.Request().query("INSERT INTO dbo.Embright_Users (Username) VALUES ('" + Username + "');");
console.log("Added one new record");
}

Answer 1

The callbacks are not chained correctly. The InsertNewRecord() should be passed as callback to UserExist() function to make sure the execute in sequence. eg:
// Calling UserExist with a callback instead of 'if' statement
UserExist(Username, InsertNewRecord)
function UserExist(Username, callback) {
console.log('Checking whether user exists or not... ');
new sql.Request().query("SELECT * FROM dbo.DB_Users WHERE Username = '" + Username + "';")
.then(function (recordset) {
if (isEmptyObject(recordset)) {
console.log("The User does not exist, ready to insert");
// Calling InsertNewRecord with the username passed
callback(Username);
} else {
console.log("The user is existed already.");
// Do nothing
}
}).catch(function (err) {
//When errors come
});
}