JSFiddle - React, Tailwind, and code Playground

JavaScript

var persons = {
    "person1" : {
        "Name": "Adam",
        "Address": "USA" 
    },
    "person2" : {
        "Name": "Jamie",
        "Address": "USA" 
    }
};
var count = 0;
//count = persons.length;// wont work
for ( property in persons )
{
    if(persons.hasOwnProperty(property))
    {
        count++;
    }
}
alert("count = " + count);