Run results for: GBCR Sequential (2)

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36

Browser: Chrome 69

Operating system: Linux

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
control	212379.1 Ops/sec
gbcr one	119699.1 Ops/sec
gbcr all	38728.0 Ops/sec

Script Preparation code:

function createEl() {
  const el = document.createElement('div');
  el.style.width = 100;
  el.style.height = 100;
  el.style.position = 'relative';
  el.style.x = 10;
  el.style.y = 10;
  return el;
}

const els = [... new Array(10)].map(() => createEl());
window.els = els;
els.forEach(el => document.body.appendChild(el));

Tests:

control
console.log('const');
gbcr one
console.log('const'); window.els[0].getBoundingClientRect();
gbcr all
console.log('const'); window.els.forEach(el => el.getBoundingClientRect());

Run results for: GBCR Sequential (2)

Test the performance of getBoundingClientRect sequential calls.

control

gbcr one

gbcr all