chaining in js

chaning.js

var chaining = function(){
  this.count = 1;
  this.increment = function(){
    this.count++;
    this.addition = function(v){
      this.count += v;
      this.shout = function(){
        console.log("I am shouting dadad...." + this.count);
        return this;
      };
      return this;
    };
    return this;
  };
};
console.log(new chaining().increment().addition(4).shout());