JSFiddle - React, Tailwind, and code Playground

HTML

<input id ="click" type="button" value = "Click"/>
<span id = "showInfo"></span>

JavaScript

var user = {
  name: "A",
  age: "35",
  showInfo: function(){
    $("#showInfo").text("This is" + this.name + "-" + this.age + "years old" )
  }
}

$("#click").click(user.showInfo);