Run results for: for loop vs Array.some

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.114 Safari/537.36

Browser: Chrome 89

Operating system: Mac OS X 10.15.4

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
for	4676.2 Ops/sec
some	420012.0 Ops/sec

Script Preparation code:

var array = new Array(1000);
var result = false;

AخA
 
var array = new Array(1000);var result = false;

Tests:

for (var i = 0; i < array.length; i++) {
  array[i];
  if (i === 877) {
    result = true;
  }
}

 
for (var i = 0; i < array.length; i++) {  array[i];  if (i === 877) {    result = true;  }}

some
array.some(function(i) { return array[i] === 877; });
array.some(function(i) {
return array[i] === 877;
});