Collect.js intersectByKeys() Method

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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' }

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