javascript extract value from array of objects code example

Example 1: js remove object from array by value

let originalArray = [
    {name: 'John', age: 23, color: 'red'}, 
    {name: 'Ann', age: 21, color: 'blue'}, 
    {name: 'Mike', age: 13, color: 'green'}
];

let filteredArray = originalArray.filter(value => value.age > 18);

Example 2: array objects to array of one property

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

Example 3: javascript extract array from object

var obj = {v1: 'v1', v2: 'v2'};
// extract object's values as array
var valuesArray = Object.values(obj);	// ['v1','v2']

Example 4: extract value from array of objects javascript

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

Example 5: 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);