Create a field input that is displaying on a label

JavaScript has added “onchange” listeners for each of the form fields. The poster is a HTML composition. The map alone is the only graphic element. The poster text is composed of HTML div elements. On any field change, JavaScript updates the inner HTML of the various poster text elements.

So, in order to achieve something similar, the only way is to learn coding, right? Is there any plugin that could do anything close to that? Can I create a plugin to do the job? Thank you. Also a guy told me that this site is using a plugin. Is that possible?

The mapping plugin used is available at https://www.mapbox.com/showcase/wordpress
Its appearance isn’t exactly like your OP example (which does not appear to be a WordPress site). Maybe the plugin’s map marker location and appearance can be modified through CSS to achieve a similar poster-like effect? Not sure how the site you linked achieved the effect. That aspect may not be part of the plugin itself.

There are a number of generic mapping plugins available. They don’t provide for a poster-like customization out of the box. A lot can be achieved regarding final appearance with CSS alone. The problem will be interactive maps generally occur in iframes and applying your own CSS to elements within an iframe is difficult. It makes some sense that the text customization is independent of the map itself.