map mdn javascrip code example

Example 1: map javascript

function each(collection, action) {
  if (Array.isArray(collection)) {
    for (var i = 0; i < collection.length; i++) {
      action(collection[i], i, collection);
    }
  } else {
    for (var key in collection) {
      action(collection[key], key, collection);
    }
  }
}

Example 2: map javascript

miMapa.forEach(function(valor, clave) {
  console.log(clave + ' = ' + valor);
});
// Mostrará 2 logs; el primero con "0 = cero" y el segundo con "1 = uno"