Run results for: parseInt vs toString vs unary(+)

Run details:

User agent: Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.182 Safari/537.36

Browser: Chrome 88

Operating system: Windows 8.1

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
parseInt a number	274343.7 Ops/sec
parseInt a string	263973.0 Ops/sec
toString a number	3086143.8 Ops/sec
toString a string	3801974.2 Ops/sec
unery convert to number from number	5393424.5 Ops/sec
unery convert to number from string	2044755.2 Ops/sec

Script Preparation code:

var numbers = [1, 12, 123, 1234, 12345, 123456, 1234567, 12345678, 123456789];
var strNumbers = ["1", "12", "123", "1234", "12345", "123456", "1234567", "12345678", "123456789"];

Tests:

parseInt a number
numbers.forEach(n => parseInt(n, 10));
parseInt a string
strNumbers.forEach(n => parseInt(n, 10));
toString a number
numbers.forEach(n => n.toString());
toString a string
strNumbers.forEach(n => n.toString());
unery convert to number from number
numbers.forEach(n => +n);
unery convert to number from string
strNumbers.forEach(n => +n);

Run results for: parseInt vs toString vs unary(+)

parseInt a number

parseInt a string

toString a number

toString a string

unery convert to number from number

unery convert to number from string