wp-getting-started-with-rxjs-05.js

import { fromEvent } from "rxjs";
import { map } from "rxjs/operators";

let span = document.querySelector("#span-location");

fromEvent(document, "mousemove")
    .pipe(
        map((e) => {
            return { x: e.clientX, y: e.clientY };
        })
    )
    .subscribe((e) => {
        span.innerHTML = `X: ${e.x} - Y: ${e.y}`;
    });