Run results for: eval vs new Function vs function(Sample JS Functions)

Run details:

User agent: Mozilla/5.0 (Android 13; Mobile; rv:122.0) Gecko/122.0 Firefox/122.0

Browser: Firefox Mobile 122

Operating system: Android

Device Platform: Mobile

Date tested: 2 years ago

new Function

2.7M/s

regular

2.5M/s

eval

1.1M/s

View exact numbers

Test name	Executions per second
✓ new Function	2,697,308 Ops/sec
regular	2,547,452 Ops/sec
eval	1,137,496 Ops/sec

Script Preparation code:

var newFunc = new Function("let r = Math.random().toString(36).substring(7).includes('x');");
var regular = function(){
return Math.random().toString(36).substring(7).includes('x');;
}

Tests:

eval
eval("let r = Math.random().toString(36).substring(7).includes('x');");
new Function
newFunc();
regular
regular()