Find elements added and removed explicitly between two arrays or elements or objects.
npm install simple-array-diff#Array Difference#
Find elements added and removed explicitly between two arrays or elements or objects.
``
npm install simple-array-diff --save
##Usage##
`javascript
//Require the module
var arrayDiff = require('simple-array-diff');
//Use it
var result = arrayDiff(
result.added //Array of elements added in updated array
result.removed //Array of elements removed in updated array
result.common //Array of elements which are also present in updated array. Common elements in both arrays.
`
##Examples##
There are two use cases:
CASE 1: Difference based on element values.
CASE 2: Difference based on any key in the element of array. (Array of Objects).
###CASE 1: Difference based on element values###
`javascript`
var arrayDiff = require('simple-array-diff');
var result = arrayDiff(
[1, 2, 3, 4, 5, 6],
[1, 2, 4, 5, 6, 0, 9, 10]
);
console.log(result);
OUTPUT:
{ added: [ 0, 9, 10 ], removed: [ 3 ], common: [ 1, 2, 4, 5, 6 ] }
`javascript`
var arrayDiff = require('simple-array-diff');
var result = arrayDiff(
['a', 'b', 'c', 1, 3, 5, true],
['c', 'd', 'e', 7, 3, 4, 5, false, true]
);
console.log(result);
OUTPUT:
{ added: [ 4, 7, 'd', 'e', false ], removed: [ 1, 'a', 'b' ], common: [ 3, 5, 'c', true ] }
###CASE 2: Difference based on any key in the element of array. (Array of Objects)###
`javascript`
var arrayDiff = require('simple-array-diff');
var result = arrayDiff(
[
{id:1, name: 'a'},
{id:2, name: 'b'},
{id:3, name: 'c'},
{id:4, name: 'd'},
{id:5, name: 'e'}
],
[
{id:1, name: 'a'},
{id:2, name: 'b'},
{id:7, name: 'e'}
],
'id' //The property in objects to find uniqueness with
);
console.log(result);
OUTPUT:
{ added: [ { id: 7, name: 'e' } ],
removed: [ { id: 3, name: 'c' }, { id: 4, name: 'd' }, { id: 5, name: 'e' } ],
common: [ { id: 1, name: 'a' }, { id: 2, name: 'b' } ]
}