# Parentheses in IIFE in JavaScript

Normally, parentheses are used instead of plus when calling a function in-place, because this style is considered more obvious:

`(function() { console.log('!'); }());`

Most often, the parentheses of a function call are placed outside, like this:

`(function() { console.log('!'); })();`

Determine what will be output to the console without running the code:

`let result = (function() { return '!'; }()); console.log(result);`

Determine what will be output to the console without running the code:

`let result = (function() { return '!'; })(); console.log(result);`

Determine what will be output to the console without running the code:

`let result = (function() { return '!'; }); console.log(result);`

Determine what will be output to the console without running the code:

`let result = (function() { return '!'; }); console.log(result());`
←→
↑
en ru