JSFiddle - React, Tailwind, and code Playground

JavaScript

function newFunc() {
    this.name = "this is person name";
    this.Age = "16 Years";
}

newFunc.prototype.init = function() {
    var that = this;
    setInterval(function() {
        that.xyz()
    }, 1000);
}


newFunc.prototype.xyz = function() {
    console.log(this.Age);
}


var abc = new newFunc();

abc.init();