Run results for: spacify

Run details:

User agent: Mozilla/5.0 (Linux; Android 8.0.0; Pixel Build/OPR3.170623.007) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.116 Mobile Safari/537.36

Browser: Chrome Mobile 60

Operating system: Android 8.0.0

Device Platform: Pixel

Date tested: 7 years ago

Test name	Executions per second
split	462609.2 Ops/sec
loop A	792329.3 Ops/sec
loop B	525808.1 Ops/sec
reduce	237432.6 Ops/sec
regex	263558.4 Ops/sec

Script Preparation code:

function splitJoin(str) {
  return str.split('').join(' ');
}

function loopA(str) {
  let acc = '';
  for(let i = 0, l = str.length; i < l; i++) {
    acc += i ? ' ' + str[i] : str[i];
  }
  return acc;
}

function loopB(str) {
  let acc = '';
  for(let i = 0, l = str.length; i < l; i++) {
    acc += str[i] + ' ';
  }
  return acc.slice(0, acc.length - 1);
}

function reduceS(str) {
  return Array.prototype.reduce.call(str, (acc, n) => acc + ' ' + n);
}

function regexS(str) {
  return str.replace(/(.)(?!$)/g, '$1 ');
}

Tests:

split
splitJoin('hello world')
loop A
loopA('hello world')
loop B
loopB('hello world')
reduce
reduceS('hello world')
regex
regexS('hello world')

split

loop A

loop B

reduce

regex