Run results for: For loop vs Index Of

Run details:

User agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:81.0) Gecko/20100101 Firefox/81.0

Browser: Firefox 81

Operating system: Ubuntu

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
for loop	1825940.0 Ops/sec
indexOf	37735.7 Ops/sec

Script Preparation code:

var arr = [];
var count = 1000;
for(var i = 0; i<count; i++)
{
  arr.push(i);
}

Tests:

for loop
function indexOfFor(obj, list) { var i; for (i = 0; i < list.length; i++) { if (list[i] === obj) { return i; } } return -1; }; indexOfFor(550, arr);
indexOf
arr.indexOf(550, arr);