Run results for: Array.reduce

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.75 Safari/537.36

Browser: Chrome 73

Operating system: Mac OS X 10.14.3

Device Platform: Desktop

Date tested: 6 years ago

Test name	Executions per second
reduce	768.6 Ops/sec
foreach	3726.4 Ops/sec

Script Preparation code:

const data = [];

for (let i = 0; i < 1000; i ++) {
  data.push([String(i), i]);
}

​x
 
const data = [];​for (let i = 0; i < 1000; i ++) {  data.push([String(i), i]);}

Tests:

const data = [];

for (let i = 0; i < 1000; i ++) {
  data.push([String(i), i]);
}
data.reduce((p, c) => Object.assign(p, c), {});

 
const data = [];​for (let i = 0; i < 1000; i ++) {  data.push([String(i), i]);}data.reduce((p, c) => Object.assign(p, c), {});

const data = [];

for (let i = 0; i < 1000; i ++) {
  data.push([String(i), i]);
}
const p = {};
data.forEach(c => {
  p[c[0]] = c[1];
});

 
const data = [];​for (let i = 0; i < 1000; i ++) {  data.push([String(i), i]);}const p = {};data.forEach(c => {  p[c[0]] = c[1];});