Run results for: Large data Performance: innerHTML vs DocumentFragment

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:144.0) Gecko/20100101 Firefox/144.0

Browser: Firefox 144

Operating system: Linux

Device Platform: Desktop

Date tested: 5 months ago

Test name	Executions per second
innerHTML	4.5 Ops/sec
DocumentFragment	74.0 Ops/sec

HTML Preparation code:

<div id="viewer"></div>

Tests:

innerHTML
const lines = 50000; let data = ''; for(let i = 0; i<=lines; i++) { data += `<div class="row"><span id="line-${i}">${i}</span><span>Foo Bar ${i}</span></div>` } const el = document.getElementById('viewer'); el.innerHTML = data;
DocumentFragment
const lines = 50000; let data = ''; for(let i = 0; i<=lines; i++) { data += `<div class="row"><span id="line-${lines[i]}">${lines[i]}</span><span>Foo Bar ${lines[i]}</span></div>` } const fragment = document.createDocumentFragment(); const wrapper = document.createElement('div'); const el = document.getElementById('viewer'); wrapper.innerHTML = data.html; fragment.appendChild(wrapper); el.appendChild(fragment);