Run results for: typeof vs instanceof vs constructor vs toString

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:132.0) Gecko/20100101 Firefox/132.0

Browser: Firefox 132

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

typeof

198K/s

instanceof

194K/s

constructor

193K/s

toString

191K/s

View exact numbers

Script Preparation code:

var data = 1000n;

Tests:

typeof
console.log(typeof(data) == 'bigint');
instanceof
console.log(data instanceof BigInt);
constructor
console.log(data.constructor == BigInt);
toString
console.log(Object.prototype.toString.call(data) == '[object BigInt]');