Run details:
Mozilla/5.0 (Linux; Android 8.1.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.120 Mobile Safari/537.36
Chrome Mobile 91
Android 8.1.0
Mobile
3 years ago
Test name Executions per second
parseInt a number 76520.4 Ops/sec
parseInt a string 65265.3 Ops/sec
toString a number 495155.8 Ops/sec
toString a string 602950.3 Ops/sec
string literal a number 1034000.2 Ops/sec
string literal a string 670991.4 Ops/sec
add empty string to number 1035736.9 Ops/sec
add empty string to string 855512.9 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 + "");