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Collect.js median() Method
  • Last Updated : 26 Nov, 2020

The median() method is used to return the median of the collection elements or median of the given key from the collection.

Syntax:

collect(array).median(key)

Parameters: The collect() method takes one argument that is converted into the collection and then median() method is applied to it. The median() method holds the key as a parameter.

Return Value: This method returns the median of the collection elements.

Module Installation: Install collect.js module using the following command from the root directory of your project:



npm install collect.js

The below example illustrates the median() method in collect.js:

Example 1: Filename: index.js

Javascript




// Requiring the module
const collect = require('collect.js');
  
// Array containing sample values
let arr = [10, 15, -20, -25, 40, 50, -70];
  
// Creating collection object
const collection = collect(arr);
  
// Function call
const median_val = collection.median();
  
// Printing median value
console.log(median_val);

Run the index.js file using the following command:

node index.js

Output:

-25

Example 2: Filename: index.js

Javascript




// Requiring the module
const collect = require('collect.js');
  
// Array containing sample values
let arr = [
  {
      name: 'Rahul',
      dob: '25-10-96',
      section: 'A',
      score: 98,
  },
  {
      name: 'Aditya',
      dob: '25-10-96',
      section: 'B',
      score: 96,
  },
  {
      name: 'Abhishek',
      dob: '16-08-94',
      section: 'A',
      score: 80
  }
];
  
// Creating collection object
const collection = collect(arr);
  
// Function call
const median_val = collection.median('score');
  
// Printing median value
console.log(median_val);

Run the index.js file using the following command:

node index.js

Output:

96



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