Collect.js last() Method

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The last() method is used to return the last element from the collection that satisfy the given truth test.

Syntax:

collect(array).last(callback)

Parameters: The collect() method takes one argument that is converted into the collection and then last() method is applied on it. The last() method holds the callback function.

Return Value: This method returns the last element from the collection that satisfy the given truth test.

Below example illustrate the last() method in collect.js:

Example 1:

const collect = require('collect.js'); 
  
const collection = collect([10, 20, 30, 40, 50]); 
  
const last_val = collection.last(element => element / 10); 
  
console.log(last_val);

Output:

Example 2:

const collect = require('collect.js'); 
  
let obj = [ 
    { 
        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 
    }, 
    { 
        name: 'Rahul', 
        dob: '19-08-96', 
        section: 'B', 
        score: 77, 
    }, 
]; 
  
const collection = collect(obj); 
  
const last_val = collection.last( 
    element => element.name == 'Rahul'); 
  
console.log(last_val);

Output:

{ name: 'Rahul', dob: '19-08-96', section: 'B', score: 77 }

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