Run results for: lodash.round VS toFixed() VS toFixed() and parseFloat vs L.formmatNum

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.122 Safari/537.36

Browser: Chrome 81

Operating system: Mac OS X 10.15.4

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
Round floating number using lodash round function	1097.7 Ops/sec
Round floating number using toFixed()	2838.6 Ops/sec
Round floating number using toFixed() and parseFloat	1813.1 Ops/sec
Leaflet formatNum	5591.1 Ops/sec

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

 <script src="https://unpkg.com/leaflet@1.6.0/dist/leaflet.js"
   integrity="sha512-gZwIG9x3wUXg2hdXF6+rVkLF/0Vi9U8D2Ntg4Ga5I5BZpVkVxlJWbSQtXPSiUTtC0TjtGOmxa1AJPuV0CPthew=="
   crossorigin=""></script>

Script Preparation code:

var x = 5.236;

Tests:

Round floating number using lodash round function
for (var i = 0; i < 1000; i++) { _.round(x,2); }
Round floating number using toFixed()
for (var i = 0; i < 1000; i++) { x.toFixed(2); }
Round floating number using toFixed() and parseFloat
for (var i = 0; i < 1000; i++) { parseFloat(x.toFixed(2)); }
Leaflet formatNum
for (var i = 0; i < 1000; i++) { L.Util.formatNum(x, 2); }

Run results for: lodash.round VS toFixed() VS toFixed() and parseFloat vs L.formmatNum

Compare round lodash function vs javascript native toFixed() function

Round floating number using lodash round function

Round floating number using toFixed()

Round floating number using toFixed() and parseFloat

Leaflet formatNum