Run results for: toFixed vs toPrecision vs Math.round()

Run details:

User agent: Mozilla/5.0 (Linux; Android 8.0.0; SM-N950F) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.89 Mobile Safari/537.36

Browser: Chrome Mobile 84

Operating system: Android 8.0.0

Device Platform: Mobile

Date tested: 4 years ago

Script Preparation code:

var someFloat = 0.123456789;

Tests:

toFixed(4)
someFloat.toFixed(4);
toPrecision(4).toString()
someFloat.toPrecision(4).toString();
(Math.round(*10000)/10000).toString()
(Math.round(someFloat*10000)/10000).toString();