Collect.js map() Method

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The map() function iterates through a collection and pass each value to callback.In JavaScript, the array is first converted to a collection and then the function is applied to the collection.

Syntax:

data.map(rule)

Parameters: This function accepts a single parameter as mentioned above and described below:

rule: This parameter holds the operation rule or the condition to be applied on the collection.

Return value : Return the modified collection list.

Below examples illustrate the map() function in collect.js

Example 1: Here in this example, we take a collection and then using the map() function we apply the operation to the collection.

Javascript

// It is used to import collect.js library 
const collect = require('collect.js'); 
  
const num = [1, 2, 3, 4, 5]; 
  
const data = collect(num); 
  
const x = data.map(e => e * 3); 
  
console.log(x.all());

Output:

[ 3, 6, 9, 12, 15 ]

Example 2: Same as above example but applying a different operation to perform.

Python3

//It is used to import collect.js library 
  
const collect = require('collect.js'); 
  
const num = [10 ,20 ,30 ,40, 50]; 
  
const data = collect(num); 
  
const x = data.map(e => e / 10); 
  
console.log(x.all());

Output:

[1 , 2, 3 ,4 ,5]

Reference: https://collect.js.org/api/map.html

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