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promise.then(f, f) // 1.Yöntem
promise.finally(f) // 2.Yöntem

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promise.then(null, errorHandlingFunction) // 1. Yöntem
promise.catch(errorHandlingFunction) // 2. Yöntem

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let promise = new Promise(resolve => {
  setTimeout(() => resolve("done!"), 1000); 
});  

promise.then(consolo.log); // (1)
promise.then(consolo.log()); // (2)
promise.then((data) => consolo.log(data)); // (3)

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promise.then(
  result => alert(result), 
  error => alert(error)
);

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let promise = new Promise(function (resolve, reject) {
  resolve('basarili!');
  reject(new Error('hata alindi!'))
})
promise.then(
  function (result) {
    console.log(result);
  },
  function (error) {
    console.log(error);

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let promise = new Promise(function(resolve, reject){

  resolve("done");
  reject(new Error("…")); // ignored
  setTimeout(() => resolve("…")); // ignored
  
});

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let promise = new Promise(function(resolve, reject) { 
  
  setTimeout(() => reject(new Error("Whoops!")), 1000);
  
});

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let promise = new Promise(function(resolve, reject) {  
  
  setTimeout(() => resolve("done"), 1000); 
  
});

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let promise = new Promise(function(resolve, reject) {
  // Executor function
  
});

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var x = 10; console.log(x);