Run results for: Array looping

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36

Browser: Chrome 120

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
✓ Array.forEach	124,768 Ops/sec
Array.map	88,345 Ops/sec
Array.filter	75,417 Ops/sec
while + Array.entries (condensed)	27,618 Ops/sec
for loop + Array.entries	26,351 Ops/sec
while + Array.entries	26,105 Ops/sec
for loop + Array.entries (condensed)	24,200 Ops/sec
Simple for loop (condensed)	15,404 Ops/sec
Instructionless for loop	15,285 Ops/sec
Simple for loop	14,840 Ops/sec
Simple for loop (reverse)	13,601 Ops/sec
enumerable for loop (order not important)	13,257 Ops/sec
enumerable for loop (order is respected)	6,310 Ops/sec

Test name

Executions per second

✓ Array.forEach

124,768 Ops/sec

Array.map

88,345 Ops/sec

Array.filter

75,417 Ops/sec

while + Array.entries (condensed)

27,618 Ops/sec

for loop + Array.entries

26,351 Ops/sec

while + Array.entries

26,105 Ops/sec

for loop + Array.entries (condensed)

24,200 Ops/sec

Simple for loop (condensed)

15,404 Ops/sec

Instructionless for loop

15,285 Ops/sec

Simple for loop

14,840 Ops/sec

Simple for loop (reverse)

13,601 Ops/sec

enumerable for loop (order not important)

13,257 Ops/sec

enumerable for loop (order is respected)

6,310 Ops/sec

Tests:

Simple for loop
for( var i = 0, n = arr.length; i < n; i++ ) { someFn( arr[ i ] ); }
Simple for loop (reverse)
for( var i = arr.length; i > -1; i-- ) { someFn( arr[ i ] ); }
Array.forEach
arr.forEach( someFn );
for loop + Array.entries
for( var e = arr.entries(), n = e.next(); ! n.done; n = e.next() ) { someFn( n.value[ 1 ] ); }
while + Array.entries
var e = arr.entries(), n = e.next(); while( ! n.done ) { someFn( n.value[ 1 ] ); n = e.next(); }
enumerable for loop (order not important)
for( var i in arr ) { someFn( arr[ i ] ); }
enumerable for loop (order is respected)
for( r of arr ) { someFn( r ); }
Array.map
arr.map( someFn );
Array.filter
arr.filter( someFn );
while + Array.entries (condensed)
var e = arr.entries(), n; while( ! ( n = e.next() ).done ) { someFn( n.value[ 1 ] ); }
for loop + Array.entries (condensed)
for( var e = arr.entries(), n; ! (n = e.next()).done; ) { someFn( n.value[ 1 ] ); }
Simple for loop (condensed)
for( var i = 0, n = arr.length; i < n; ) { someFn( arr[ i++ ] ); }
Instructionless for loop
for( var i = 0, n = arr.length; i < n; someFn( arr[ i++ ] ) ) ;