Run results for: Split and join vs split/join regex replace

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.121 Safari/537.36

Browser: Chrome 85

Operating system: Mac OS X 10.15.6

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
Split and regex replace	991043.9 Ops/sec
Multiple Split and Join	631049.4 Ops/sec

Script Preparation code:

var str = 'really rare  [TL_HIDDEN] (Phone number hidden by company) (Email hidden by company) [EMAIL_HIDDEN]';

Tests:

Split and regex replace
str.split('(Phone number hidden by company)') .join('') .split('(Email hidden by company)') .join('').replace(/(\[TL_HIDDEN\])|(\[EMAIL_HIDDEN\])/g, "");
Multiple Split and Join
str.split('(Phone number hidden by company)') .join('') .split('(Email hidden by company)') .join('') .split('[TL_HIDDEN]') .join('') .split('[EMAIL_HIDDEN]') .join('');