Run results for: Test: CSS calc() with var() - 02

Run details:

User agent: Mozilla/5.0 (Windows NT 6.3; Win64; x64; rv:109.0) Gecko/20100101 Firefox/115.0

Browser: Firefox 115

Operating system: Windows 8.1

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
calc() * 2	303.7 Ops/sec
calc() * 0.5	304.9 Ops/sec
calc() * -0.5	298.0 Ops/sec
calc() / 2	306.4 Ops/sec

HTML Preparation code:

<section id="section"></section>

Script Preparation code:

const section = document.getElementById("section");

section.style.setProperty('--translation', '100');
section.style.setProperty('--translationPx', '100px');
section.style.setProperty('--translationPercentage', '100%');


for (var i = 0; i < 1000; i++) {
    const newDiv = document.createElement("div");
    const text = document.createTextNode(`${i}`);
    newDiv.appendChild(text);
    section.appendChild(newDiv);
}

var nodes = document.querySelectorAll("div");

Tests:

calc() * 2
for (var i = 0; i < nodes.length; i++) { nodes[i].style = "transform: translateY(calc(var(--translation) * 2))" }
calc() * 0.5
for (var i = 0; i < nodes.length; i++) { nodes[i].style = "transform: translateY(calc(var(--translation) * 0.5))" }
calc() * -0.5
for (var i = 0; i < nodes.length; i++) { nodes[i].style = "transform: translateY(calc(var(--translation) * -0.5))" }
calc() / 2
for (var i = 0; i < nodes.length; i++) { nodes[i].style = "transform: translateY(calc(var(--translation) / 2))" }

Run results for: Test: CSS calc() with var() - 02

Test difference in performance with calc() and var() functions compared with simple units. Test on unitless, percentage and absolute values.

calc() * 2

calc() * 0.5

calc() * -0.5

calc() / 2