arrowFuncs.js

var x = {
  name:'Steve',
  hello:function(){
    var that = this;
    var helper = function(){
      console.log('X Name ',that.name);
    };
    helper();
  }

};

var y = {
  name:'Steve',
  hello:function(){
    var helper = function(){
      console.log('Y Name ' ,this.name);
    }.bind(this);
    helper();
  }

};

var z = {
  name:'Steve',
  hello:function(){
    var helper =()=>{
      console.log('Z Name ',this.name);
    }
    helper();
  }

};

x.hello();
y.hello();
z.hello()