Collect.js intersectByKeys() Method

The intersectByKeys() method is used to remove any given keys from the original collection that are not present in the given array or collection.

Syntax:

collection.intersectByKeys(key)

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

• key: This parameter holds the key or key, value pair that need to intersect from original collection.

Return Value: This method returns the intersected collection items.

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

Example 1:

const collect = require('collect.js');

const collection = collect({
    name: 'Rahul',
    class: 'IX',
    section: 'A',
    score: 98
});

const intersect_val = collection.intersectByKeys({
    name: 'Rakesh',
    age: 24,
    section: 'B',
    year: 2011
});

console.log(intersect_val.all());

Output:

{ name: 'Rahul', section: 'A' }

Example 2:

const collect = require('collect.js');

const collection1 = collect({
    key11: 'val1',
    key12: 'val2',
    key13: 'val3'
});

const collection2 = collect({
    key11: 'val1',
    key22: 'val2',
    key13: 'val3'
});

const intersect_val =
collection1.intersectByKeys(collection2);

console.log(intersect_val.all());

Output:

{ key11: 'val1', key13: 'val3' }