Render lots of items without freezing the page. This mini-tool generates a large list and compares slow vs fast rendering.
Last render
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Time (ms)
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Nodes
0
Tip
Use fragments
Fast mode uses DocumentFragment to batch DOM inserts.
What’s different from last game?
Game 65 reduced update frequency; this one reduces layout/reflow by batching inserts.
Optional challenge variants
Tips
Open DevTools → Console to see helpful logs. Try changing constants at the top of the script.