Collect.js last() Method
Last Updated :
27 Nov, 2020
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:
50
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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