get values from array of objects javascript code example

Example 1: 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

Example 2: array objects to array of one property

let result = objArray.map(a => a.foo);

Example 3: object get array of values

const data = {
    "2015": {
        "year": 2015,
        "cover": {}
    }
}

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

Example 4: map a property from array of objects javascript

var result = objArray.map(function(a) {return a.foo;});

Example 5: extract value from array of objects javascript

let result = objArray.map(a => a.foo);

Example 6: Getting One Value from an Array of Items

//Getting One Value from an Array of Items or sum of array
var numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12];
var total = numbers.reduce(function(total, current) {
    return total + current;
}, 0);

console.log(total);