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

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_1_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/131.0.6778.103 Mobile/15E148 Safari/604.1

Browser: Chrome Mobile iOS 131

Operating system: iOS 18.1.1

Device Platform: Mobile

Date tested: one year ago

new Function

5.0M/s

regular

4.9M/s

eval

4.2M/s

View exact numbers

Test name	Executions per second
✓ new Function	5,004,962 Ops/sec
regular	4,904,714 Ops/sec
eval	4,235,940 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()