how get value object.keys code example

Example 1: Return the Objects Keys and Values

const keysAndValues = (obj) => [Object.keys(obj), Object.values(obj)];

keysAndValues({a: 1, b: 2, c: 3}); 
//➞ [["a", "b", "c"], [1, 2, 3]]

keysAndValues({a: "Dell", b: "Microsoft", c: "Google"}));
//➞ [["a", "b", "c"], ["Dell", "Microsoft", "Google"]]

keysAndValues({key1: true, key2: false, key3: undefined});
// ➞ [["key1", "key2", "key3"], [true, false, undefined]]

Example 2: get keys of object js

var buttons = {
  foo: 'bar',
  fiz: 'buz'
};

for ( var property in buttons ) {
  console.log( property ); // Outputs: foo, fiz or fiz, foo
}