Run results for: test early return

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_2_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/133.0.6943.84 Mobile/15E148 Safari/604.1

Browser: Chrome Mobile iOS 133

Operating system: iOS 18.2.1

Device Platform: Mobile

Date tested: one year ago

actual

4K/s

future

1/s

View exact numbers

Test name	Executions per second
✓ actual	3,523 Ops/sec
future	1 Ops/sec

HTML Preparation code:

<!--your preparation HTML code goes here-->

Script Preparation code:

/*your preparation JavaScript code goes here
To execute async code during the script preparation, wrap it as function globalMeasureThatScriptPrepareFunction, example:*/
async function globalMeasureThatScriptPrepareFunction() {
    // This function is optional, feel free to remove it.
    // await someThing();
}

Tests:

actual
(function() { var loadTimeout = 5000; var loadFired = false; var timeoutFallback; function onWindowLoad() { if (!loadFired) { loadFired = true; clearTimeout(timeoutFallback); window.dataLayer = window.dataLayer || []; window.dataLayer.push({ 'event': 'window_load' }); } } function fallback() { if (!loadFired) { loadFired = true; window.dataLayer = window.dataLayer || []; window.dataLayer.push({ 'event': 'load_fallback' }); } } window.addEventListener('load', onWindowLoad); timeoutFallback = setTimeout(fallback, loadTimeout); })();
future
(function() { var loadTimeout = 5000; var loadFired = false; var timeoutFallback; function onWindowLoad() { if (loadFired) { return; } loadFired = true; clearTimeout(timeoutFallback); window.dataLayer = window.dataLayer || []; window.dataLayer.push({ 'event': 'window_load' }); } function fallback() { if (loadFired) { return; } loadFired = true; window.dataLayer = window.dataLayer || []; window.dataLayer.push({ 'event': 'load_fallback' }); } window.addEventListener('load', onWindowLoad); timeoutFallback = setTimeout(fallback, loadTimeout); })();