Benchmark: .createHTMLDocument() vs DOMParser() vs .createContextualFragment()

Script Preparation code:

const count = 20_000;
const testString = '<div>' + (new Array(count)).fill('').join('<b>x</b>') + '</div>';

Tests:

.createHTMLDocument() + .innerHTML
function test_createHTMLDocument() { const doc = document.implementation.createHTMLDocument(''); doc.body.innerHTML = testString; return doc.body; }
DOMParser
function test_DOMParser() { return (new DOMParser()).parseFromString(testString, 'text/html').body; }
Nested .createElement() + .appendChild()
function test_documentFragment() { return document.createRange().createContextualFragment(testString); }

Rendered benchmark preparation results:

Previous results

Test case name	Result
.createHTMLDocument() + .innerHTML
DOMParser
Nested .createElement() + .appendChild()

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36

Browser/OS: Chrome 135 on Windows

Test name	Executions per second
.createHTMLDocument() + .innerHTML	226807072.0 Ops/sec
DOMParser	218004352.0 Ops/sec
Nested .createElement() + .appendChild()	213679568.0 Ops/sec

Related benchmarks:

.createHTMLDocument() vs DOMParser() vs .createContextualFragment() (version: 1)