Run results for: 'of' vs indexed charAt() to iterate characters in a string with prototype

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36

Browser: Chrome 136

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

indexed charAt

8K/s

char of

7K/s

View exact numbers

Test name	Executions per second
✓ indexed charAt	8,432 Ops/sec
char of	7,328 Ops/sec

Script Preparation code:

var testString = 'abcdefghijklmnopqrstuvwxyz';

Tests:

char of
for (char of testString) console.log(char);
indexed charAt
for (i = 0; i < testString.length; i++) console.log(String.prototype.charAt.call(testString,i));