Javascript get nested value from object by string path

getNested.js

function getNested(obj,prop){
    var _prop=prop.split(".")
    for(var i=0;i<_prop.length;i++){
    	if(_prop[i] in obj)
    		obj=obj[_prop[i]]
      else
      	return;
    }
    return obj;
}
var myInputObject={
  name: "Some One",
  favourites:["apple","mango"],
  addresses:[
    {
      street: "Some Street",
      city: "Some City"
    },{
      street: "Some Street 2",
      city: "Some City 2"
    }
  ]
};
console.log(getNested(myInputObject,"name"))//Some One
console.log(getNested(myInputObject,"favourites.0"))//apple
console.log(getNested(myInputObject,"addresses.0.street"))//Some Street
console.log(getNested(myInputObject,"addresses.1.city"))//Some City 2
console.log(getNested(myInputObject,"addresses.3.city"))//undefined