MeasureThat.net

Run results for: parseInt vs toString vs string literal vs + empty string vs String constructor

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Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36
Chrome 133
Mac OS X 10.15.7
Desktop
24 days ago
Test name Executions per second
parseInt a number 109923440.0 Ops/sec
parseInt a string 11348308.0 Ops/sec
toString a number 26995610.0 Ops/sec
toString a string 25914776.0 Ops/sec
string literal a number 109509896.0 Ops/sec
string literal a string 45735916.0 Ops/sec
add empty string to number 109673256.0 Ops/sec
add empty string to string 95952936.0 Ops/sec
String constructor on a number 20568506.0 Ops/sec
String constructor on a string 32321870.0 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 + "");

  • String constructor on a number

     
    numbers.forEach(n => String(n));

  • String constructor on a string

     
    strNumbers.forEach(n => String(n));