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Run results for:
Nullish coalescing (??) vs logical OR (||)
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<iframe src="https://measurethat.net/Embed?id=581817" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (iPhone; CPU iPhone OS 18_1_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/132.0.6834.78 Mobile/15E148 Safari/604.1
Browser:
Chrome Mobile iOS 132
Operating system:
iOS 18.1.1
Device Platform:
Mobile
Date tested:
one year ago
Test name
Executions per second
Nullish coalescing (??)
251031680.0 Ops/sec
Logical OR (||)
276435040.0 Ops/sec
Nullish coalescing (??) [short-circuit]
243225264.0 Ops/sec
Logical OR (||) [short-circuit]
243141776.0 Ops/sec
Tests:
Nullish coalescing (??)
let x = null ?? undefined ?? null ?? undefined ?? null ?? undefined ?? null ?? undefined ?? null ?? undefined ?? 1;
Logical OR (||)
let x = null || undefined || null || undefined || null || undefined || null || undefined || null || undefined || 1;
Nullish coalescing (??) [short-circuit]
let x = 1 ?? undefined ?? null ?? undefined ?? null ?? undefined ?? null ?? undefined ?? null ?? undefined ?? 1;
Logical OR (||) [short-circuit]
let x = 1 || undefined || null || undefined || null || undefined || null || undefined || null || undefined || 1;