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/133.0.0.0 Safari/537.36

Browser: Chrome 133

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
✓ Array.forEach	2,987,996 Ops/sec
Simple for loop	618,527 Ops/sec
Instructionless for loop	612,512 Ops/sec
Simple for loop (condensed)	530,510 Ops/sec
Array.map	439,520 Ops/sec
Simple for loop (reverse)	398,097 Ops/sec
Array.filter	304,360 Ops/sec
while + Array.entries (condensed)	229,423 Ops/sec
for loop + Array.entries (condensed)	228,373 Ops/sec
while + Array.entries	175,169 Ops/sec
for loop + Array.entries	174,450 Ops/sec
enumerable for loop (order not important)	76,189 Ops/sec
enumerable for loop (order is respected)	13,103 Ops/sec

Test name

Executions per second

✓ Array.forEach

2,987,996 Ops/sec

Simple for loop

618,527 Ops/sec

Instructionless for loop

612,512 Ops/sec

Simple for loop (condensed)

530,510 Ops/sec

Array.map

439,520 Ops/sec

Simple for loop (reverse)

398,097 Ops/sec

Array.filter

304,360 Ops/sec

while + Array.entries (condensed)

229,423 Ops/sec

for loop + Array.entries (condensed)

228,373 Ops/sec

while + Array.entries

175,169 Ops/sec

for loop + Array.entries

174,450 Ops/sec

enumerable for loop (order not important)

76,189 Ops/sec

enumerable for loop (order is respected)

13,103 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++ ] ) ) ;