Run results for: fake-binary

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.121 Safari/537.36

Browser: Chrome 72

Operating system: Mac OS X 10.14.3

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
Conversion	1929035.9 Ops/sec
Replacement	1222883.5 Ops/sec
Loop	6026861.5 Ops/sec

Script Preparation code:

function fakeBin(strNums) { 
  return strNums.split("")
                .map(num => num = num < 5 ? 0 : 1)
                .join("")
}

function fakeBin2(x) {
  return x.replace(/\d/g, n => "0000011111"[n])
}

function fakeBin3(x) {
  var result = "";
  
  for (var i = 0; i < x.length; i++) {
    if (x.charCodeAt(i) < 53) {
      result += "0";
    } else {
      result += "1";
    }
  }
  
  return result;
}

Tests:

Conversion
fakeBin("123456789")
Replacement
fakeBin2("123456789")
Loop
fakeBin3("123456789")

Run results for: fake-binary

Tests the efficiency between using .replace() and .split().map().join() to edit single character values in a string that only contains numbers.

Conversion

Replacement

Loop