Benchmark: nodeType vs instanceof

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;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
nodeType
instanceof
nodeType literal

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 2 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.2.1 Safari/605.1.15

Browser/OS: Safari 17 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
nodeType	3757186.0 Ops/sec
instanceof	3972172.0 Ops/sec
nodeType literal	5404574.0 Ops/sec

nodeType vs instanceof (version: 0)

Comparing performance of: nodeType vs instanceof vs nodeType literal

Created: 4 years ago by: Registered User

Jump to the latest result

nodeType

instanceof

nodeType literal

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A