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January 27, 2022 10:24 am GMT
Original Link: https://dev.to/khafidprayoga/javascript-foreach-function-4lc9
Javascript forEach() function
Anda dapat menggunakan for-each apabila ingin membuat suatu statement disetiap elemen array, namun aksi tersebut tidak akan melakukan return untuk setiap elemennya.
const students = ["Bob", "Alice", "Robert"];students.forEach((student) => { console.log(`Hai, ${student}!`);});
Output:
Hai, Bob!
Hai, Alice!
Hai, Robert!
Apabila anda mendeklarasikan variable untuk menyimpan expression students.forEach(callback)
, output tidak akan disimpan pada variable tersebut, dan statement didalam block forEach akan dijalankan secara otomatis.
const greet = students.forEach(callback);console.log(Array.isArray(greet));
Output:false
Apabila anda menggunakan lodash _.each() berikut contohnya
const _ = require("lodash");const students = ["Bob", "Alice", "Robert"];_.each(students, (val) => { console.log(`Hai, ${val}!`);});
dari kode diatas akan menghasilkan output yang sama pada saat kita menggunakan forEach().
Referensi:
Lodash - each / forEach
Original Link: https://dev.to/khafidprayoga/javascript-foreach-function-4lc9
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