JS - Design for keeping the state of an array of variables

I've created a small program to check some URLs. It does what I want however I'd like to change the design of it - at the moment I have to create new variables each time I want to add a url , which isn't really ideal - see below example. Instead, I'd like an array of URLs.

But I'm unsure of what design pattern I'd use in this case - as I need to keep the state of each of the URLs.

let minutes = 10, the_interval = minutes * 60 * 1000;
const url1 = "https://example.com/1";
const url2 = "https://example.com/2"";
const url3 = "https://example.com/3";

(async () => {

    // Get starting pages - for the very first run
    let url1Start = await getUrlContent(url1)
    let url2Start = await getUrlContent(url2)
    let url3Start = await getUrlContent(url3)

    setInterval(async function () {

        url1Start = await doCheck(url1, url1Start)
        url2Start = await doCheck(url2, url2Start)
        url3Start = await doCheck(url3, url3Start)

    }, the_interval);

})();

Basically, I'm just getting the state of the page at the stage, then doing the same after every x minutes and comparing it with the original.

Any ideas would be appreciated.

Thanks.