Regular expression: url starts and url ends?

Question

JavaScript

Greetings!
Need regular expression to fire trigger in Google Tag Manager ("PagePath matches regular expression")
URL starts with /katalog and ends with /
Looks like this: /katalog/some-url/.../some-url/
This didn't work
^\/katalog*\/$

Answer 1

Dot before asterisk
^\/katalog.*\/$

Answer 2

Can be default if'om

if ((str.charAt(0) == "/katalog") && (str.charAt(str.length - 1) == "/")) {
    // Стринга совпала
}