Run results for: random String for loop vs while loop

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.36

Browser: Chrome 78

Operating system: Linux

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
for loop	391019.0 Ops/sec
while loop	403972.2 Ops/sec

Tests:

for loop
function randomString( length = 10, allowed = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789" ) { let result = "" for (let i = 0; i < length; i++) { result += allowed.charAt(Math.floor(Math.random() * allowed.length)) } return result } randomString();
while loop
function foo( length = 10, allowed = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789" ) { let result = "" let i=0; do { result += allowed.charAt(Math.floor(Math.random() * allowed.length)) i +=1; } while(i < length) return result } foo();