Run results for: IIFE vs eval()

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:107.0) Gecko/20100101 Firefox/107.0

Browser: Firefox 107

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
eval	27218.6 Ops/sec
iife	12774930.0 Ops/sec

Script Preparation code:

var result;

Tests:

eval
eval("(function(){var sum = 0; for (var i = 1; i < 100; i++){sum += i;} return sum;}());");
iife
(function(){var sum = 0; for (var i = 1; i < 100; i++){sum += i;} return sum;}());