Run results for: toPrecision

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.159 Safari/537.36

Browser: Chrome 92

Operating system: Linux

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
Number(v.toPrecision(p))	1231508.5 Ops/sec
_p=Math.pow(10,p-Math.ceil(Math.log10(v)));Math.round(v*_p)/_p	896504.2 Ops/sec

Script Preparation code:

var v=982173129.981279
var p=12

AخA
 
var v=982173129.981279var p=12

Tests:

Number(v.toPrecision(p))
Number(v.toPrecision(p));
Number(v.toPrecision(p));
_p=Math.pow(10,p-Math.ceil(Math.log10(v)));Math.round(v*_p)/_p
var _p=Math.pow(10,p-Math.ceil(Math.log10(v)));Math.round(v*_p)/_p;
var _p=Math.pow(10,p-Math.ceil(Math.log10(v)));Math.round(v*_p)/_p;