how does javaScript function with parentheses around it works

Asked Mar 21 '19 at 16:52

Active Mar 21 '19 at 16:55

Viewed 31 times

I came across this function while learning on freecodecamp and I am quite lost on how it works. I am relatively new to JavaScript and I would appreciate if someone could explain better on how function with parentheses around it works. I would be glad if a link with well detailed explanation is also provided.

arr1 = ["monday", "tuesday", "wenesday","thursday", "friday"];
(function() {
  arr2 = [...arr1]; // change this line
  arr1[0] = 'potato'
})();

asked Mar 21 '19 at 16:52

Aniebiet Ebebe

https://www.tutorialspoint.com/Why-are-parenthesis-used-to-wrap-a-JavaScript-function-call – Pranav C Balan Mar 21 '19 at 16:53
https://stackoverflow.com/questions/440739/what-do-parentheses-surrounding-an-object-function-class-declaration-mean – Pranav C Balan Mar 21 '19 at 16:53
https://stackoverflow.com/questions/592396/what-is-the-purpose-of-a-self-executing-function-in-javascript – Get Off My Lawn Mar 21 '19 at 16:54
It's called an IIFE. Please visit https://developer.mozilla.org/en-US/docs/Glossary/IIFE for detailed information. – adami Mar 21 '19 at 16:55

how does javaScript function with parentheses around it works

0 Answers0