Lodash _.pullAt() Method

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The _.pullAt() method is used to remove the element corresponding to the given address and return an array of removed elements. Syntax:

_.pullAt(array, arrayofIndexes)

Parameters: This method accept two parameters as mentioned above and described below:

array: This parameter holds the array that need to be modify.
arrayofIndexes: This parameter holds the indexes of elements that need to be removed from array.

Return Value: It returns a new array of removed elements. Example 1: This example removes the given indexed elements from array and returns the array of remaining elements.

javascript

const _ = require('lodash'); 
  
let ar = [100, 200, 33, 400, 554] 
  
let indexes = [1, 3, 4] 
  
let value = _.pullAt(ar, indexes) 
  
console.log('Original Array ', ar); 
  
console.log('\nRemoved elements array ', value)

Here, const _ = require(‘lodash’) is used to import the lodash library into the file. Output:

Original Array  [ 100, 33 ]

Removed elements array  [ 200, 400, 554 ]

Example 2: This example removes the given indexed elements from array and returns the array of remaining elements.

javascript

const _ = require('lodash'); 
  
let ar = ['a', 'b', 'c', 'd', 'e'] 
  
let indexes = [1, 3] 
  
let value = _.pullAt(ar, indexes) 
  
console.log('Original Array ', ar); 
  
console.log('\nRemoved elements array ', value)

Output:

Original Array  [ 'a', 'c', 'e' ]

Removed elements array  [ 'b', 'd' ]

Example 3: This example removes the given indexed elements from array and returns the array of remaining elements.

javascript

const _ = require('lodash'); 
  
let ar = [{'name': 'lodash'},  
          {'function': 'pullAt'},  
          {'used on': 'array'}]; 
  
let indexes = [1, 2] 
  
let value = _.pullAt(ar, indexes) 
  
console.log('Original Array ', ar); 
  
console.log('\nRemoved elements array ', value) 

Output:

Original Array  [ { name: 'lodash' } ]

Removed elements array  [ { function: 'pullAt' }, { 'used on': 'array' } ]

Note: This will not work in normal JavaScript because it requires the library lodash to be installed. Reference: https://lodash.com/docs/4.17.15#pullAt

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