Run results for: Native findIndex vs Custom findIndex

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.36

Browser: Chrome 78

Operating system: Mac OS X 10.13.5

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
Native findIndex	11434170.0 Ops/sec
Custom findIndex	487264.6 Ops/sec

Script Preparation code:

var arr = new Array(100).fill(null).map((val, idx) => {
return {
id: idx + 1,
text: idx
};
});

Tests:

Native findIndex
arr.findIndex((zoom) => { return zoom.id === 30; });
Custom findIndex
let length = arr.length; for(let idx = 0 ; idx < length ; idx++) { let zoom = arr[idx]; if(zoom.id === 30) {return idx;} }