Run results for: nodeType vs instanceof

Run details:

User agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:152.0) Gecko/20100101 Firefox/152.0

Browser: Firefox 152

Operating system: Ubuntu

Device Platform: Desktop

Date tested: 7 days ago

nodeType literal

53.2M/s

nodeType

52.6M/s

instanceof

33.3M/s

View exact numbers

Test name	Executions per second
✓ nodeType literal	53,234,760 Ops/sec
nodeType	52,586,720 Ops/sec
instanceof	33,341,248 Ops/sec

Script Preparation code:

var xs = [];
var n = 0;

for (let i = 0; i < 1000; ++i) {
  xs[i] = (Math.random() > .5) ? document.createElement(`a`) : document.createTextNode(``);
};

Tests:

nodeType
n += (xs[(Math.random() * 1000)|0].nodeType === Node.ELEMENT_NODE)|0;
instanceof
n += ((xs[(Math.random() * 1000)|0]) instanceof HTMLElement)|0;
nodeType literal
n += (xs[(Math.random() * 1000)|0].nodeType === 1)|0;