What is the way to iterate over the properties of a plain JavaScript object

Question

Can you tell me What is the way to iterate over the properties of a plain JavaScript object?

Answer 1

You can iterate over the properties of a plain object using several methods. The most common one is:

for...in loop: It iterates over all enumerable properties of an object, including those in the object's prototype chain. You can use hasOwnProperty() to filter out properties from the prototype chain.

Example:

const Person = { name: 'Ram', age: 25 };

for (let key in Person) {

  if (Person.hasOwnProperty(key)) {

    console.log(key + ': ' + Person[key]);

  }