Benchmark: "decodeHTMLEntities" vs DOM Parser

Script Preparation code:

var testString = '<body><script>alert(1);</script foo="bar">' + Array(100001).join('<div>x</div>') + '</body>';

Tests:

CreateElement_div
function test_innerHTML() { var element = document.createElement('div'); function decodeHTMLEntities(str) { if (str && typeof str === 'string') { // strip script/html tags str = str.replace(/<script[^>]*>([\S\s]*?)<\/script>/gmi, ''); str = str.replace(/<\/?\w(?:[^"'>]|"[^"]*"|'[^']*')*>/gmi, ''); element.innerHTML = str; str = element.textContent; element.textContent = ''; } return str; } return decodeHTMLEntities(testString); }
DOMParser
function test_DOMParser() { return (new DOMParser).parseFromString(testString, 'text/html').documentElement.innerText; }

Rendered benchmark preparation results:

Previous results

Test case name	Result
CreateElement_div
DOMParser

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/133.0.0.0 Safari/537.36

Browser/OS: Chrome 133 on Windows

DOMParser

157.4M/s

CreateElement_div

142.9M/s

View exact numbers

Test name	Executions per second
✓ DOMParser	157,377,296 Ops/sec
CreateElement_div	142,890,528 Ops/sec

"decodeHTMLEntities" vs DOM Parser (version: 1)