Finding the max value of an attribute in an array of objects

Question

I\'m looking for a really quick, clean and efficient way to get the max \"y\" value in the following JSON slice:

[
  {
    \"x\": \"8/11/2009\",
    \"y\": 0         


        

Answer 1

Each array and get max value with Math.

data.reduce((max, b) => Math.max(max, b.costo), data[0].costo);