Run results for: Drawing on Canvas

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/142.0.0.0 Safari/537.36

Browser: Chrome 142

Operating system: Windows

Device Platform: Desktop

Date tested: 8 months ago

Circles (drawing in the end)

169K/s

Circles (drawing every time)

13K/s

View exact numbers

Test name	Executions per second
✓ Circles (drawing in the end)	169,454 Ops/sec
Circles (drawing every time)	13,233 Ops/sec

HTML Preparation code:

<canvas id="testcanvas" width="1000" height="1000"></canvas>

Script Preparation code:

var canvas = document.getElementById('testcanvas');
var ctx = canvas.getContext('2d');
var plants = [];
for (var i = 0; i < 50; i++) {
  plants.push({
    x: Math.random() * 1000,
    y: Math.random() * 1000,
    size: Math.random()
  });
}

Tests:

Circles (drawing every time)
ctx.fillStile = 'green'; for (var i in plants) { ctx.beginPath(); ctx.arc( plants[i].x, plants[i].y, plants[i].size * 5, 0, 2 * Math.PI ); ctx.fill(); }
Circles (drawing in the end)
ctx.fillStile = 'green'; for (var i in plants) { ctx.beginPath(); ctx.arc( plants[i].x, plants[i].y, plants[i].size * 5, 0, 2 * Math.PI ); } ctx.fill();