Aetae

function CheckLoginPromise(login){
  return new Promise(
    (resolve, reject) => DataBase.Handle.query('SELECT * FROM `users` WHERE `login` = ?', [login], function(err, result, row) {
      if(err) return reject(err);
      if(result.length > 0) {
        console.log(result);
        return resolve(true); 
      }
      resolve(false); 
    })
  )
}

CheckLoginPromise(login).then(bool => {
  // делаем что-то
})

function loop(array, getPromise) {
  array = array.slice();
  const responses = [];
  return new Promise(function innerLoop(resolve, reject) {
    if (array.length) {
      return getPromise(array.shift()).then(response => {
        responses.push(response);
        innerLoop(resolve, reject);
      }, reject);
    } 
    resolve(responses);
  });
}

function request(url) {
  return new Promise((res, rej) => {
    const delayTime = Math.floor(Math.random() * 10000) + 1;
    setTimeout(() => res(url), delayTime);
  });
}

loop(['a', 'b'], request).then(console.log, console.error);

if (node.children[0].value == 'on' ) { inputRadioValue(node.children[0]); }

if (node.children[0].value == 'on' ) { return inputRadioValue(node.children[0]); }