Match URL with regex

Question

I am having problems matching the following URLs with Cypress intercept() using regex. What am I doing wrong?

cy.intercept('GET', /https:\/\/mysite\.me\.com\/pages\/[^\/]+[0-9](?=\/$|$)/, { fixture: 'pages.json' }).as('getPage');

Matching URLs:

Non-matching URLs:

I would ultimately like to use the regex with an env variable but first things first.

cy.intercept('GET', `${Cypress.env('API_PATH')}/pages/[^\/]+[0-9](?=\/$|$)/`, { fixture: 'pages.json' }).as('getPages');

user_10401931 · Answer

That regex looks unnecessarily complicated, try to simplify it to something like:

/\/pages\/[0-9]+[/]?$/

that will match both:

/pages/1234

and:

/pages/1234/

[^\/]

You don't need \ because / has a different meaning inside a character class.

(?=\/$|$)

Ok, so the / at the end is optional. This is more readable: [/]?, or even \/?.

And I don't think you need to be as explicit as mentioning the base url in the pattern.