Run results for: set: innerHTML vs outerHTML

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_3_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/135.0.7049.83 Mobile/15E148 Safari/604.1

Browser: Chrome Mobile iOS 135

Operating system: iOS 18.3.2

Device Platform: Mobile

Date tested: one year ago

innerHTML (DOM)

1.3M/s

innerHTML (template)

857K/s

outerHTML (document)

723K/s

innerHTML (document)

700K/s

outerHTML (DOM)

698K/s

View exact numbers

Test name	Executions per second
✓ innerHTML (DOM)	1,264,016 Ops/sec
innerHTML (template)	856,795 Ops/sec
outerHTML (document)	722,738 Ops/sec
innerHTML (document)	700,312 Ops/sec
outerHTML (DOM)	698,422 Ops/sec

HTML Preparation code:

<div id="parent">
  <div id="child"></div>
</div>

Script Preparation code:

/*your preparation JavaScript code goes here
To execute async code during the script preparation, wrap it as function globalMeasureThatScriptPrepareFunction, example:*/
async function globalMeasureThatScriptPrepareFunction() {
    // This function is optional, feel free to remove it.
    // await someThing();
}

Tests:

outerHTML (document)
const el = document.getElementById("child"); el.outerHTML = `<div id="child"><p>TEST</p></div>`;
innerHTML (document)
const el = document.getElementById("child"); el.innerHTML = `<p>TEST</p>`;
outerHTML (DOM)
const template = document.createElement("template"); const el = document.createElement("div"); template.appendChild(el); el.outerHTML = `<div id="child"><p>TEST</p></div>`;
innerHTML (DOM)
const template = document.createElement("template"); const el = document.createElement("div"); template.appendChild(el); el.innerHTML = `<p>TEST</p>`;
innerHTML (template)
const template = document.createElement("template"); const el = document.createElement("div"); template.innerHTML = `<p>TEST</p>`; el.appendChild(template.content);