Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Safari/537.36
Chrome 104
Mac OS X 10.15.7
Desktop
2 years ago
Test name Executions per second
parseInt a number 1464526.4 Ops/sec
parseInt a string 1263886.0 Ops/sec
toString a number 12181147.0 Ops/sec
toString a string 12829213.0 Ops/sec
string literal a number 25415064.0 Ops/sec
string literal a string 16786628.0 Ops/sec
add empty string to number 24435210.0 Ops/sec
add empty string to string 21409480.0 Ops/sec
Script Preparation code:
AخA
 
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());
  • string literal a number

     
    numbers.forEach(n => `${n}`);
  • string literal a string

     
    strNumbers.forEach(n => `${n}`);
  • add empty string to number

     
    numbers.forEach(n => n + "");
  • add empty string to string

     
    strNumbers.forEach(n => n + "");