“javaScript Map Array of Objects Получите ключ” Ответ

javaScript Map Array of Objects Получите ключ

var foo = {
  'alpha': 'puffin',
  'beta': 'beagle'
};

var keys = Object.keys(foo);
console.log(keys) // ['alpha', 'beta'] 
// (or maybe some other order, keys are unordered).