Run results for: Fastest to break

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36

Browser: Chrome 56

Operating system: Mac OS X 10.12.3

Device Platform: Other

Date tested: 7 years ago

Script Preparation code:

var a = new Array(1000);
for (let i = 0; i < a.length; i++) {
  a[i] = {checked: false};
}
a.push({checked: true});

Tests:

some
a.some((i) => { return i.checked; });
find
a.find((i) => { return i.checked; });
for
for (let i = 0; i < a.length; i++) { if (a[i].checked) break; }
for reverse
let i = 0; for (; i < a.length;) { if (a[i].checked) break; i = i + 1; }