Benchmark: toPrecision - MeasureThat.net

Script Preparation code:

var v=982173129.981279
var p=12

Tests:

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;

Rendered benchmark preparation results:

Previous results

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

ⓘ Get performance results from real users on your website with Request Metrics.

Latest run results:

Run details: (Test run date: 2 years ago)

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

Browser/OS: Chrome 92 on Linux

Test name	Executions per second
Number(v.toPrecision(p))	1231509.0 Ops/sec
_p=Math.pow(10,p-Math.ceil(Math.log10(v)));Math.round(v*_p)/_p	896504.3 Ops/sec

toPrecision (version: 0)