Finding the max value of a property in an array of objects
javascript, json
Solution
To find the maximum `y` value of the objects in `array`:
Math.max.apply(Math, array.map(function(o) { return o.y; }))
or in more modern JavaScript:
Math.max(...array.map(o => o.y))
Warning:
This method is not advisable, it is better to use reduce. With a large array, `Math.max` will be called with a large number of arguments, which can cause stack overflow.
Problem
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": 0.026572007 }, { "x": "8/12/2009", "y": 0.025057454 }, { "x": "8/13/2009", "y": 0.024530916 }, { "x": "8/14/2009", "y": 0.031004457 } ] ``` Is a for-loop the only way to go about it? I'm keen on somehow using `Math.max`.