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