Run results for: Array.from length vs for loop

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:141.0) Gecko/20100101 Firefox/141.0

Browser: Firefox 141

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

for loop

469K/s

Array.from length

36K/s

View exact numbers

Test name	Executions per second
✓ for loop	469,002 Ops/sec
Array.from length	35,899 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++) {}