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

Comparing performance of: toFixed(4) vs toPrecision(4).toString() vs (Math.round(*10000)/10000).toString() vs Math.floor fast vs the new Math.trunc

Run details:

User agent: Mozilla/5.0 (Linux; Android 10) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/107.0.5304.141 Mobile DuckDuckGo/5 Safari/537.36

Browser: Chrome Mobile 107

Operating system: Android

Device Platform: Mobile

Date tested: one year ago

Test name	Executions per second
toFixed(4) someFloat.toFixed(4); someFloat.t	1273362.6 Ops/sec
toPrecision(4).toString()	1334798.8 Ops/sec
(Math.round(*10000)/10000).toString()	1253635.2 Ops/sec
Math.floor fast	3892703.5 Ops/sec
Math.trunc	1268506.6 Ops/sec

Script Preparation code:

var someFloat = 0.123456789;

Tests:

toFixed(4) someFloat.toFixed(4); someFloat.t
someFloat.toFixed(4);
toPrecision(4).toString()
someFloat.toPrecision(4);
(Math.round(*10000)/10000).toString()
(Math.round(someFloat*10000)/10000);
Math.floor fast
~~(someFloat * 10000) / 10000;
Math.trunc
Math.trunc(someFloat * 10000) / 10000;

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

Comparing performance of: toFixed(4) vs toPrecision(4).toString() vs (Math.round(*10000)/10000).toString() vs Math.floor fast vs the new Math.trunc

toFixed(4) someFloat.toFixed(4); someFloat.t

toPrecision(4).toString()

(Math.round(*10000)/10000).toString()

Math.floor fast

Math.trunc