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Run results for:
array merging performance comparison
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<iframe src="https://measurethat.net/Embed?id=618687" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:143.0) Gecko/20100101 Firefox/143.0
Browser:
Firefox 143
Operating system:
Windows
Device Platform:
Desktop
Date tested:
7 months ago
Test name
Executions per second
spread
12653.3 Ops/sec
concat
51502.2 Ops/sec
splice
43285.0 Ops/sec
push
68470.2 Ops/sec
Tests:
spread
const original = [] for (let i=0; i<=1000; i++) { original.push({i}) } const result = {list: []} do { const toMerge = original.splice(0, 100) result.list = [...result.list, ...toMerge] } while (original.length > 0)
concat
const original = [] for (let i=0; i<=1000; i++) { original.push({i}) } const result = {list: []} do { const toMerge = original.splice(0, 100) result.list = result.list.concat(toMerge) } while (original.length > 0)
splice
const original = [] for (let i=0; i<=1000; i++) { original.push({i}) } const result = {list: []} do { const toMerge = original.splice(0, 100) result.list.splice(result.list.length, 0, ...toMerge) } while (original.length > 0)
push
const original = [] for (let i=0; i<=1000; i++) { original.push({i}) } const result = {list: []} do { const toMerge = original.splice(0, 100) result.list.push(...toMerge) } while (original.length > 0)