how to iterate over each key of an object in javascript code example

Example 1: loop an object in javascript

var obj = { first: "John", last: "Doe" };

Object.keys(obj).forEach(function(key) {
    console.log(key, obj[key]);
});

Example 2: loop in object javascript

var person = {"name":"Rasel", age:26};

for (var property in person) {
   console.log(person[property]);
}