How to set a page to execute a script through regular expressions?

Question

JavaScript

It is necessary that the script is executed only on pages of a certain type.
For a static page, I do this:

let path = window.location.href;
let opt = !path || path === 'url website';

And it works great, but I need the script to be executed on pages at this address

https://website.ru/search?results%5Btable%5D=85&results%5Bfilters%5D%5B0%5D%5Bfield%5D=0&results%5Bfilters%5D%5B0%5D%5Bvalue%5D=число любой длинны&results%5Bfilters%5D%5B1%5D%5Bfield%5D=104

Tried to substitute a regular expression such, but does not work. (where the inscription is a number of any length)
/[0-9]{7}/g
Not perceived.
In general, you can use regular expressions in the address, and how to specify it correctly?