get max value from array of objects javascript code example

Example 1: javascript array find highest value of array of objects by key

Math.max.apply(Math, array.map(function(o) { return o.y; }))

Example 2: How to find the max id in an array of objects in JavaScript

const shots = [
  {id: 1, amount: 2},
  {id: 2, amount: 4},
  {id: 3, amount: 52},
  {id: 4, amount: 36},
  {id: 5, amount: 13},
  {id: 6, amount: 33}
];

shots.reduce((acc, shot) => acc = acc > shot.amount ? acc : shot.amount, 0);

Example 3: max value array of object javascript

Math.max(...arr.map(o => o.value));

Example 4: get object with max value javascript

let objects = [{id: 0, votes: 5}, {id: 1, votes: 3}, {id: 2, votes: 11}]

let maxObj = objects.reduce((max, obj) => (max.votes > obj.votes) ? max : obj);

/* `max` is always the object with the highest value so far. 
 * If `obj` has a higher value than `max`, then it becomes `max` on the next iteration.
 * So here:
 *  |  max = {id: 0, votes: 5},   obj = {id: 1, votes: 3}
 *  |  max = {id: 0, votes: 5},   obj = {id: 2, votes: 11}
 * reduced = {id: 2, votes: 11}
 */