Add a description, image, and links to the javascript-regex-demo topic page so that developers can more easily learn about it.

So I'm working with Cypress and I'm attempting to understand how to verify a URL via regex matching; but I want to use several character sets in the regex, and I want to add a variable as well. Not ...

ECMAScript RegExp match array offsets provide additional information about the position of a captured substring relative to the index of the match. An example implementation can be found in ...