[JS] Add duplicate function with ES6 Syntax (#219)

2019-10-26 19:15:12 +02:00 · 2019-10-26 19:15:12 +02:00 · 344c0bc5bf
parent be004582fb
commit 344c0bc5bf
1 changed files with 8 additions and 0 deletions
--- a/questions/javascript-questions.md
+++ b/questions/javascript-questions.md
@ -710,6 +710,14 @@ function duplicate(arr) {
 duplicate([1, 2, 3, 4, 5]); // [1,2,3,4,5,1,2,3,4,5]
 ```

+Or with ES6:
+
+```js
+const duplicate = (arr) => [...arr, ...arr];
+
+duplicate([1, 2, 3, 4, 5]); // [1,2,3,4,5,1,2,3,4,5] 
+```
+
 [[↑] Back to top](#js-questions)

 ### Why is it called a Ternary expression, what does the word "Ternary" indicate?