JSFiddle - React, Tailwind, and code Playground
HTML
<div id="messageArea"></div>
JavaScript
function xyPoint(x, y){
this.x = x;
this.y = y;
this.debugMessage = function(){
document.getElementById("messageArea").innerHTML =
"xyPoint(x, y) constructor called";
};
}
var myPoint = new xyPoint(10, 20).debugMessage();