ブラウザの座標を表示する

gistfile1.txt

var div = document.createElement('div');
div.id = "tj-pos-view";
div.style.cssText = "position: fixed; right: 0; top: 0; background: black; color: white;"
document.body.appendChild(div);
document.body.addEventListener("mousemove", (e) => document.getElementById("tj-pos-view").innerText = "x: " + e.pageX + " y: " + e.pageY);