Iterate through JSON Object using JQuery

Sometimes you get int o a need where you need to iterate through a JSON object while using JQuery or Angular 6 (with typescript). This is become very useful when you are not fully aware of what is the JSON object has in term of properties but you still needs to do some operations on the object properties..
So Let’s assume that you have a JSON Object called employee and you need to print the keys and values of these keys:

var employee = {
firstName: “FName”,
lastName: “LName”

var keys = Object.keys(employee);

for (var i = 0; i < keys.length; i++) {
console.log(keys[i]]); //printing the key, so it will be firstName and lastName
console.log(employee[keys[i]]); //printing the values; which will be FName and LName

Note: This syntax is working fine with Angular 6 while using Type Script and with JQuery.