Run results for: Nullish coalescing (??) vs logical OR (||)

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: 3 months 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;

Run results for: Nullish coalescing (??) vs logical OR (||)

Nullish coalescing (??)

Logical OR (||)

Nullish coalescing (??) [short-circuit]

Logical OR (||) [short-circuit]