Run results for: Slice vs Substring for formatting HS codes

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:109.0) Gecko/20100101 Firefox/112.0

Browser: Firefox 112

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
full code with slice	104009640.0 Ops/sec
full code with substring	103839048.0 Ops/sec

Script Preparation code:

var code = '3926909790'

Tests:

full code with slice
var formattedCode = `${code.slice(0, 4)} ${code.slice(4, 6)} ${code.slice(6, 8)} ${code.slice(8, 10)}`
full code with substring
var formattedCode = `${code.substring(0, 4)} ${code.substring(4, 6)} ${code.substring(6, 8)} ${code.substring(8, 10)}`