Run results for: spacify test

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.113 Safari/537.36

Browser: Chrome 60

Operating system: Mac OS X 10.12.5

Device Platform: Other

Date tested: 7 years ago

Test name	Executions per second
split	1118886.6 Ops/sec
loop A	1120491.2 Ops/sec
loop B	1014997.1 Ops/sec
reduce	483390.2 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);
}

Tests:

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

Run results for: spacify test

split

loop A

loop B

reduce