JSFiddle - React, Tailwind, and code Playground

HTML

<button class="setValue">set Value</button>
<button class="getValue"> get Value</button>

JavaScript

var MyObject = {

    myData: 1,
    
    run: function()
    {
        this.a();
        this.b();
    },

    a: function()
    {
       var that = this;

        $('.setValue').click(function(){
             that.myData = 2;
        });
       
    },

    b: function()
    {
        var that = this;
        
        $('.getValue').click(function(){
              alert(that.myData); // should come 2 as value
        });
       
    }
}

$(function(){
   MyObject.run();
});