Collect.js flatMap() Method
Last Updated :
25 Nov, 2020
Collect.js is a wrapper library for working with arrays and objects which is dependency-free and easy to use. The flatMap() method is used to iterate all the collection elements and pass each collection elements into given callback.
Syntax:
collect(array).flatMap(callback)
Parameters: The collect() method takes one argument that is converted into the collection and then flatMap() method is applied on it. The flatMap() method holds a single parameter callback function.
Example 1: Below example illustrates the flatMap() method in collect.js
html
const collect = require( 'collect.js' );
let obj = [
{
name: 'Rahul' ,
score: 98,
},
{
name: 'Aditya' ,
score: 96,
},
{
name: 'Abhishek' ,
score: 80
}
];
const collection = collect(obj);
const map_Val = collection.flatMap(
element => element.name.toUpperCase());
console.log(map_Val.all());
|
Output:
[ 'RAHUL', 'ADITYA', 'ABHISHEK' ]
Example 2:
html
const collect = require( 'collect.js' );
let obj = [
{
name: 'Rahul' ,
score: 98,
},
{
name: 'Aditya' ,
score: 96,
},
{
name: 'Abhishek' ,
score: 80
},
{
name: 'Rahul' ,
score: 77,
},
];
const collection = collect(obj);
const map_Val = collection.flatMap(
element => element.score > 80);
console.log(map_Val.all());
|
Output:
[ true, true, false, false ]
Share your thoughts in the comments
Please Login to comment...