array includes

termasuk array

Array.prototype.includes ES7/ES2016 yang sesuai dengan spec.prototype. termasuk shim/polyfill/penggantian yang bekerja sejauh ES3.

Paket ini mengimplementasikan antarmuka ES-Shim API. Ini bekerja di lingkungan yang didukung ES3 dan mematuhi spesifikasi yang diusulkan.

Karena Array.prototype.includes tergantung pada penerima (nilai this ), ekspor utama mengambil array untuk beroperasi sebagai argumen pertama.

Mesin yang membutuhkan paket ini meliputi:

• Yaitu (semua versi)
• Safari <9
• Firefox <43, dan 99-101
• Chrome <47
• Tepi <14
• Node <6

Memulai

npm install --save array-includes

Penggunaan

Penggunaan Dasar: Termasuk (Array, Nilai [, FromIndex = 0])

 var includes = require ( 'array-includes' ) ;
var assert = require ( 'assert' ) ;
var arr = [ 'one' , 'two' ] ;

includes ( arr , 'one' ) ; // true
includes ( arr , 'three' ) ; // false
includes ( arr , 'one' , 1 ) ; // false 

Contoh

 var arr = [
	1 ,
	'foo' ,
	NaN ,
	- 0
] ;

assert . equal ( arr . indexOf ( 0 ) > - 1 , true ) ;
assert . equal ( arr . indexOf ( - 0 ) > - 1 , true ) ;
assert . equal ( includes ( arr , 0 ) , true ) ;
assert . equal ( includes ( arr , - 0 ) , true ) ;

assert . equal ( arr . indexOf ( NaN ) > - 1 , false ) ;
assert . equal ( includes ( arr , NaN ) , true ) ;

assert . equal ( includes ( arr , 'foo' , 0 ) , true ) ;
assert . equal ( includes ( arr , 'foo' , 1 ) , true ) ;
assert . equal ( includes ( arr , 'foo' , 2 ) , false ) ; 

 /* when Array#includes is not present */
delete Array . prototype . includes ;
var shimmedIncludes = includes . shim ( ) ;

assert . equal ( shimmedIncludes , includes . getPolyfill ( ) ) ;
assert . equal ( arr . includes ( 'foo' , 1 ) , includes ( arr , 'foo' , 1 ) ) ; 

 /* when Array#includes is present */
var shimmedIncludes = includes . shim ( ) ;

assert . equal ( shimmedIncludes , Array . prototype . includes ) ;
assert . equal ( arr . includes ( 1 , 'foo' ) , includes ( arr , 1 , 'foo' ) ) ; 

Tes

Cukup klon repo, npm install , dan jalankan npm test