Arrow Functions - Javascript

                                           If the entered number is even number add 1.

 var h = [2,8,12,47];
 var f=h.filter(x=> x%2==0).map(y=>y+1);

In here, filter() does logical processing and map() function do addition process.


Other example containing test(),replace() functions.

const myReplace=str1=>{ "use strict"; const chStr=/old/; const myString="My old friend is very clever."; return chStr.test(myString) ? myString.replace(chStr,str1) : NaN; }; print(myReplace("best"));


----Old output----
My old friend is very clever.
---New output---
My best friend is very clever.

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