get all properties from object js from array code example

Example 1: get array of all property in object array

objArray = [ { foo: 1, bar: 2}, { foo: 3, bar: 4}, { foo: 5, bar: 6} ];
let result = objArray.map(a => a.foo); //[1,3,5]
//OR
let result = objArray.map(({ foo }) => foo) //[1,3,5]

Example 2: get all entries in object as array hjs

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