Collect.js median() Method
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