Benchmark: CSS calc() + var()

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:

var(unitless) + calc() + %
for (var i = 0; i < nodes.length; i++) { nodes[i].style = "transform: translateY(calc(var(--translation) * 1%))" }
var(%) + calc()
for (var i = 0; i < nodes.length; i++) { nodes[i].style = "transform: translateY(var(--translationPercent))" }
Percentage
for (var i = 0; i < nodes.length; i++) { nodes[i].style = "transform: translateY(100%))" }
var(unitless) + calc() + px
for (var i = 0; i < nodes.length; i++) { nodes[i].style = "transform: translateY(calc(var(--translation) * 1px))" }
px
for (var i = 0; i < nodes.length; i++) { nodes[i].style = "transform: translateY(100px))" }
var(px) + calc()
for (var i = 0; i < nodes.length; i++) { nodes[i].style = "transform: translateY(calc(var(--translationPx)))" }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
var(unitless) + calc() + %
var(%) + calc()
Percentage
var(unitless) + calc() + px
px
var(px) + calc()

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 21 days ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:124.0) Gecko/20100101 Firefox/124.0

Browser/OS: Firefox 124 on Windows

View result in a separate tab

Test name	Executions per second
var(unitless) + calc() + %	401.4 Ops/sec
var(%) + calc()	453.7 Ops/sec
Percentage	656.4 Ops/sec
var(unitless) + calc() + px	396.4 Ops/sec
px	671.5 Ops/sec
var(px) + calc()	393.0 Ops/sec

CSS calc() + var() (version: 0)

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

Comparing performance of: var(unitless) + calc() + % vs var(%) + calc() vs Percentage vs var(unitless) + calc() + px vs px vs var(px) + calc()

Created: 6 months ago by: Guest

Jump to the latest result

var(unitless) + calc() + %

var(%) + calc()

Percentage

var(unitless) + calc() + px

px

var(px) + calc()

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A