Benchmark Run Result for: Caching Uint8Array length property vs getting it each time in the loop

Test name	Executions per second
Cache length	16420.6 Ops/sec
Do not cache	8107.3 Ops/sec

Script Preparation code:

var arr = new Uint8Array(1000);
arr.fill(0xff)

Tests:

Cache length
var arrLen = arr.length; var sum = 0; for (var i = 0; i < arrLen; i++){ sum = arr[i]; }
Do not cache
var sum = 0; for (var i = 0; i < arr.length; i++){ sum = arr[i]; }