Run results for: slice vs regex

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:152.0) Gecko/20100101 Firefox/152.0

Browser: Firefox 152

Operating system: Linux

Device Platform: Desktop

Date tested: 7 days ago

brackets

1412.8M/s

slice

1383.1M/s

regex

17.9M/s

View exact numbers

Script Preparation code:

var strIn = '1234-12-34 05:27:56Z';
var strOut = '';
var regex = /\d{4}-(\d{2})-(\d{2}) (\d{2})/;

Tests:

slice
var month = strIn.slice(5, 7); var day = strIn.slice(8, 10); var hour = strIn.slice(11, 13);
regex
var [_, month, day, hour] = strIn.match(regex)
brackets
var month = strIn[5] + strIn[6]; var day = strIn[8] + strIn[9]; var hour = strIn[11] + strIn[12];