Collect.js whereNotIn() Method

// Importing the collect.js module.
const collect = require('collect.js');
let obj1 = [
    { "a": 1 },
    { "a": 2 },
    { "a": 3 },
    { "a": 4 },
    { "b": 5 }
]

// Making a collection
let collection = collect(obj1);

// Using whereNotIn() method to return
// a collection not having value 2, 4
// For key "a"
let collectionFilter = collection
            .whereNotIn("a", [2, 4]);

console.log("Original collection is: ",
            collection.all())
            
console.log("Filtered collection is: ", 
            collectionFilter.all());

// Importing the collect.js module.
const collect = require('collect.js');

let obj1 = [
    { "b": 1 },
    { "c": 2 },
    { "b": 3 },
    { "b": 4 },
    { "b": 5 },
    { "c": 11 },
    { "c": 12 },
]

// Making a collection
let collection = collect(obj1);

// Using whereNotIn() method to return 
// a collection not having value 1, 2, 4
// For key "b"
let collectionFilter = 
    collection.whereNotIn("b", [1, 2, 4]);

collectionFilter = 
    collection.whereNotIn("c", [11]);

console.log("Original collection is: ", 
    collection.all());

console.log("The output will not contain "
        + "value of 1, 2, 4 for key \"b\""
        + " and value of 11 for key \"c\"");

console.log("Filtered collection is: ", 
        collectionFilter.all());