javascript object map code example

Example 1: javascript iterate object key values

Object.entries(obj).forEach(([key, value]) => {
	console.log(key, value);
});

Example 2: map through keys javascript

var myObject = { 'a': 1, 'b': 2, 'c': 3 };

Object.keys(myObject).map(function(key, index) {
  myObject[key] *= 2;
});

console.log(myObject);
// => { 'a': 2, 'b': 4, 'c': 6 }

Example 3: javascript iterate over object keys and values

const object1 = {
  a: 'somestring',
  b: 42
};

for (let [key, value] of Object.entries(object1)) {
  console.log(`${key}: ${value}`);
}

// expected output:
// "a: somestring"
// "b: 42"
// order is not guaranteed

Example 4: for key value in object javascript

for (const [key, value] of Object.entries(object1)) {
  console.log(`${key}: ${value}`);
}

Example 5: object to map javascript

const map = new Map(Object.entries({foo: 'bar'}));

map.get('foo'); // 'bar'

Example 6: javascript map

array.map((item) => {
  return item * 2
} // an example that will map through a a list of items and return a new array with the item multiplied by 2