How to search the max value of an attribute in an array object ?

Maximum value of an attribute in an array of objects can be searched in two ways, one by traversing the array and the other method is by using the Math.max.apply() method.

Example 1: In this example, the array is traversed and the required values of the object are compared for each index of the array.

filter_none

edit
close

play_arrow

link
brightness_4
code

// Array of object
var arr = [
    {
      a: 10,
      b: 25
    },
    {
        a: 30,
        b: 5
    },
    {
        a: 20,
        b: 15
    },
    {
        a: 50,
        b: 35
    },
    {
        a: 40,
        b: 45
    },
  ];
    
  // Returns max value of 
  // attribute 'a' in array
  function fun(arr){
    var maxValue = Number.MIN_VALUE;
  
    for(var i=0;i<arr.length;i++){
        if(arr[i].a>maxValue){
        maxValue = arr[i].a;
       }
    }
    return maxValue;
  }
  
  var maxValue = fun(arr);
  console.log(maxValue);

chevron_right


Output:

50

Example 2: In this example, we find the max value of an attribute by using Math.max.apply() function. It has two parameters:

  1. this
  2. array-like object

Syntax:



Math.max.apply(thisArg, [ argsArray])

More information can be found at https://developer.mozilla.org/

filter_none

edit
close

play_arrow

link
brightness_4
code

var arr = [
    {
      a: 10,
      b: 25
    },
    {
        a: 30,
        b: 5
    },
    {
        a: 20,
        b: 15
    },
    {
        a: 50,
        b: 35
    },
    {
        a: 40,
        b: 45
    },
  ];
  
  var maxValue = Math.max.apply(null
    arr.map(function(o) { return o.a; }));
  
  console.log(maxValue);

chevron_right


Output:

50

full-stack-img




My Personal Notes arrow_drop_up

Check out this Author's contributed articles.

If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.