| Server IP : 162.213.251.212 / Your IP : 3.16.78.90 [ Web Server : LiteSpeed System : Linux business55.web-hosting.com 4.18.0-553.lve.el8.x86_64 #1 SMP Mon May 27 15:27:34 UTC 2024 x86_64 User : allssztx ( 535) PHP Version : 8.1.31 Disable Function : NONE Domains : 1 Domains MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : ON | Sudo : OFF | Pkexec : OFF Directory : /proc/self/root/home/allssztx/public_html/easybuyer/node_modules/collect.js/docs/api/ |
Upload File : |
# `unique()`
The unique method returns all of the unique items in the collection:
```js
const collection = collect([1, 1, 1, 2, 3, 3]);
const unique = collection.unique();
unique.all();
// [1, 2, 3]
```
When dealing with an array of objects, you may specify the key used to determine uniqueness:
```js
const collection = collect([
{ name: 'iPhone 6', brand: 'Apple', type: 'phone' },
{ name: 'iPhone 5', brand: 'Apple', type: 'phone' },
{ name: 'Apple Watch', brand: 'Apple', type: 'watch' },
{ name: 'Galaxy S6', brand: 'Samsung', type: 'phone' },
{ name: 'Galaxy Gear', brand: 'Samsung', type: 'watch' },
]);
const unique = collection.unique('brand');
unique.all();
// [
// { name: 'iPhone 6', brand: 'Apple', type: 'phone' },
// { name: 'Galaxy S6', brand: 'Samsung', type: 'phone' },
// ]
```
You may also pass your own callback to determine item uniqueness:
```js
const collection = collect([
{ name: 'iPhone 6', brand: 'Apple', type: 'phone' },
{ name: 'iPhone 5', brand: 'Apple', type: 'phone' },
{ name: 'Apple Watch', brand: 'Apple', type: 'watch' },
{ name: 'Galaxy S6', brand: 'Samsung', type: 'phone' },
{ name: 'Galaxy Gear', brand: 'Samsung', type: 'watch' },
]);
const unique = collection.unique(item => item.brand + item.type);
unique.all();
// [
// { name: 'iPhone 6', brand: 'Apple', type: 'phone' },
// { name: 'Apple Watch', brand: 'Apple', type: 'watch' },
// { name: 'Galaxy S6', brand: 'Samsung', type: 'phone' },
// { name: 'Galaxy Gear', brand: 'Samsung', type: 'watch' },
// ]
```
[View source on GitHub](https://github.com/ecrmnn/collect.js/blob/master/src/methods/unique.js)