Run results for: Array.from length vs for loop

Run details:

User agent: Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.6312.118 Mobile Safari/537.36 XiaoMi/MiuiBrowser/14.35.1-gn

Browser: Chrome Mobile 123

Operating system: Android

Device Platform: Mobile

Date tested: one year ago

for loop

191K/s

Array.from length

2K/s

View exact numbers

Test name	Executions per second
✓ for loop	191,483 Ops/sec
Array.from length	2,160 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:

Array.from length
Array.from({length: 10000}, (_, i)=>i)
for loop
for(var i=0;i<10000;i++) {}