JSFiddle - React, Tailwind, and code Playground

JavaScript

var obj = {
    one : "A",
    two : "B",
    fnA : function() {
        this.fnB(); // without fnB method console log will display A B, with fnB it will display C D
        console.log(this.one + " " + this.two);
    },
    fnB : function() {
        this.one = "C";
        this.two = "D";
    }
};

obj.fnA();