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 Number constructor vs unary plus vs parseInt (version: 0)

Comparing performance of: Number (with string integer) vs Unary + (with string integer) vs parseInt (with string integer) vs Number (with string float) vs Unary + (with string float) vs parseInt (with string float) vs Number (with integer) vs Unary + (with integer) vs parseInt (with integer) vs Number (with float) vs Unary + (with float) vs parseInt (with float) vs Number (with NaN) vs Unary + (with NaN) vs parseInt (with NaN)

Created: 3 years ago by: Guest
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Tests:

  • Number (with string integer)

    AخA
     
    var numberStrInt = Number(Math.floor(1000 * Math.random()).toString());

  • Unary + (with string integer)

     
    var unaryStrInt = +Math.floor(1000 * Math.random()).toString();

  • parseInt (with string integer)

     
    var parseStrInt = parseInt(Math.floor(1000 * Math.random()).toString(), 10);

  • Number (with string float)

     
    var numberStrFloat = Number((1000 * Math.random()).toString());

  • Unary + (with string float)

     
    var unaryStrFloat = +(1000 * Math.random()).toString();

  • parseInt (with string float)

     
    var parseStrFloat = parseInt((1000 * Math.random()).toString(), 10);

  • Number (with integer)

     
    var numberNumInt = Number(Math.floor(1000 * Math.random()));

  • Unary + (with integer)

     
    var unaryNumInt = +Math.floor(1000 * Math.random());

  • parseInt (with integer)

     
    var parseNumInt = parseInt(Math.floor(1000 * Math.random()), 10);

  • Number (with float)

     
    var numberNumFloat = Number(1000 * Math.random());

  • Unary + (with float)

     
    var unaryNumFloat = +(1000 * Math.random());

  • parseInt (with float)

     
    var parseNumFloat = parseInt((1000 * Math.random()), 10);

  • Number (with NaN)

     
    var numberNaN = Number("hello");

  • Unary + (with NaN)

     
    var unaryNaN = +("hello");

  • parseInt (with NaN)

     
    var parseNaN = parseInt("hello", 10);
Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Experimental features:

  • Test case name Result
    Number (with string integer)
    Unary + (with string integer)
    parseInt (with string integer)
    Number (with string float)
    Unary + (with string float)
    parseInt (with string float)
    Number (with integer)
    Unary + (with integer)
    parseInt (with integer)
    Number (with float)
    Unary + (with float)
    parseInt (with float)
    Number (with NaN)
    Unary + (with NaN)
    parseInt (with NaN)

    Fastest: N/A

    Slowest: N/A

Latest run results:
Run details: (Test run date: 17 days ago)
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 Edg/133.0.0.0
Chrome 133 on Mac OS X 10.15.7
View result in a separate tab
Test name Executions per second
Number (with string integer) 57876340.0 Ops/sec
Unary + (with string integer) 56614180.0 Ops/sec
parseInt (with string integer) 57659588.0 Ops/sec
Number (with string float) 8329798.5 Ops/sec
Unary + (with string float) 8521725.0 Ops/sec
parseInt (with string float) 8956869.0 Ops/sec
Number (with integer) 93531064.0 Ops/sec
Unary + (with integer) 92357552.0 Ops/sec
parseInt (with integer) 70377416.0 Ops/sec
Number (with float) 95672576.0 Ops/sec
Unary + (with float) 93497696.0 Ops/sec
parseInt (with float) 70405984.0 Ops/sec
Number (with NaN) 144508320.0 Ops/sec
Unary + (with NaN) 137452464.0 Ops/sec
parseInt (with NaN) 137669792.0 Ops/sec
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