Run results for: Test if key is in object.

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/537.36

Browser: Chrome 105

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Script Preparation code:

var entries = new Array(1000).fill(0).map((_, i) => ['id_'+i, true]);
var obj = Object.fromEntries(entries);
var map = new Map(entries);

Tests: