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Run results for: RegEx vs For Loop e index

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Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 11_1_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.141 Safari/537.36
Chrome 87
Mac OS X 11.1.0
Desktop
4 years ago
Test name Executions per second
RegEx 7954386.0 Ops/sec
For Loop 789243.5 Ops/sec
includes 13320294.0 Ops/sec
indexof 15903388.0 Ops/sec
HTML Preparation code:
AخA
 
1
var string = "passw)odas4gsdfsdf";
Script Preparation code:
 
var string = "passw)odas4gsdfsdf";
Tests:

  • RegEx

     
    let isPasswordValid = /(?=.*[0-9])/.test(string);

  • For Loop

     
    let isPasswordValid = false;
    for (let i = string.length; i--;)
    {
        if (
          string[i] === '0' &&
          string[i] === '1' &&
          string[i] === '2' &&
          string[i] === '3' &&
          string[i] === '4' &&
          string[i] === '5' &&
          string[i] === '6' &&
          string[i] === '7' &&
          string[i] === '8' &&
          string[i] === '9' &&
          string[i] === '0' 
        )
        {
          isPasswordValid = true;
          break;
        }
    }

  • includes

     
    let isPasswordValid = string.includes('4');

  • indexof

     
    let isPasswordValid = string.indexOf('4') > -1;