JavaScript. Iterating through an Object with a for...in loop : mini phone book

js-for-in-loop.js

"use strict()";

// make a phoneBook object
var phoneBook  = {};

// add some people objects
phoneBook.bob= {name:"Bob",age:35};
phoneBook.greg= {name:"Greg",age:27};
phoneBook.nancy= {name:"Nancy", age:65};

//iterate over each item in the phoneBook
// `item` will be returned as a String so use [] method to acces properties

for(entry in phoneBook) {
	var person = phoneBook[entry]
	console.log("Name: " + person.name + " Age: "+ person.age );
};

// MDN:   https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/for...in