javascript get max value in array of objects using a for loop 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: max value array of object javascript

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

Example 3: Obtain smallest value from array of objects in Javascript

myArray.sort(function (a, b) {
    return a.Cost - b.Cost
})

var min = myArray[0],
    max = myArray[myArray.length - 1]