Run results for: iframe vs window

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36

Browser: Chrome 137

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

Native

33.3M/s

Iframe

29.4M/s

View exact numbers

Test name	Executions per second
✓ Native	33,331,406 Ops/sec
Iframe	29,390,372 Ops/sec

Script Preparation code:

var iframe = document.createElement("iframe");
iframe.src = "about:blank";
document.documentElement.appendChild(iframe);
var _window = iframe.contentWindow;
var iframeSplit = _window.String.prototype.split;
var split = String.prototype.split;
document.documentElement.removeChild(iframe);

Tests:

Native
split.call("a_random_string_test", "");
Iframe
iframeSplit.call("a_random_string_test", "");