Random HTML Attribute

2 mins to read page

I spent last evening and this morning playing around with Andrew’s Random MDN page. The result is a remix, Random HTML Attribute.

Looking through my old commits, here are main hurdels along the way:-

  • The MDN webpage used in the original project is no longer actively maintained: see web archive version here.

  • I therefore needed to look for an alternative page with a similiar structure. There were a few candidates but in the end I settled on this page.

  • I then applied the procedure described in his write up, i.e. use developer tools (more specifically Copy -> Copy JS Path), with appropriate modifications.

  • To give me a better feel for what data I was getting from getNewPages.js, I renamed the keys for the JSON object to make sure I could see at a glace what data was being scraped: see this commit.

  • It was also important to use the optional chaining (?.) operator, to make sure that my code still ran even if there was nothing to the property I was looking for.

  • From then on the journey went more or less smoothly. When deploying I kept getting an Internal server error at the final hurdle (i.e. after running vercel for deployment), even though the localhost:3000(after running vercel dev) was working fine.

  • But looking under the build logs of my project in my Vercel account, it was quickly apparent that the server did not understand views/index meant view/index.*ejs*. That was the glitch at the final hurdle.

One question that lingers in my mind is why exactly do I need to comment out the listener, i.e.

const listener = app.listen(process.env.PORT, function () {
  console.log("Your app is listening on port " + listener.address().port)
})

And also add an export i.e.

module.exports = app

For the deployment to work. The export is easier to understand, but why exactly does the listener throw a spanner in the works?

Perplexity.ai says it is something to do with serverless environments: in which case it is something too far away from my experience to have a feel for yet.

A pleasant surpise is the simple URL provided by Vercel at a click: https://random-html-attribute.vercel.app/. This somehow looks more pleasing then github pages which always begins with a github handle.