const obj = {

  key1: 'value1',

  key2: 'value2',

  key3: 'value3'

};

​

// Iterate over the object using for...in loop

for (let key in obj) {

  // Access the value of each key

  const value = obj[key];

  console.log(key + ': ' + value);

}

var obj = { foo: 'bar', baz: 42 };

​

Object.keys(obj).forEach((key) => {

    const el = obj[key];

    console.log(

      {

        key: key,

        value: el

      }

    );

});

var obj = { foo: 'bar', baz: 42 };

console.log(Object.entries(obj)); // [ ['foo', 'bar'], ['baz', 42] ]

​

for(const [i, val] of Object.entries(obj))

    new_obj[i] = val;

const obj = { a: 1, b: 2, c: 3 };

​

for (let key in obj) {

  console.log(key + ": " + obj[key]);

}