Benchmark: regex vs string replaceAll

HTML Preparation code:

<!--your preparation HTML code goes here-->

Script Preparation code:

var str = 'Hello {first} {last}. Your first name is {first} and last name is {last}.'

Tests:

regex
str = str.replaceAll(new RegExp('{first}', 'g'), 'John') str = str.replaceAll(new RegExp('{last}', 'g'), 'Doe')
string
str = str.replaceAll('{first}', 'John') str = str.replaceAll('{last}', 'Doe')

Rendered benchmark preparation results:

Previous results

Test case name	Result
regex
string

Latest run results:

Run details: (Test run date: 9 months ago)

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:144.0) Gecko/20100101 Firefox/144.0

Browser/OS: Firefox 144 on Linux

string

21.4M/s

regex

6.0M/s

View exact numbers

Test name	Executions per second
✓ string	21,371,256 Ops/sec
regex	5,991,582 Ops/sec

regex vs string replaceAll (version: 1)