Tag Archives: Javascript

How to create Private Properties in JavaScript.

We don’t have Access Modifiers in JavaScript, and all properties of an object are public, which means you can read and modify them outside the object. But what if you have a requirement to create private properties?  Consider Product object as mentioned below, let Product = { id: ‘1’, price: 200, title: ‘Pencil’ } console.log(Product.id);ContinueContinue reading “How to create Private Properties in JavaScript.”

Explain Object.keys in JavaScript

Enumerating through the properties of a JavaScript object is a persistent requirement. Hence it becomes a popular question in a JavaScript interview. Any good JavaScript developer must know about various available options. Note: You can find a video tutorial on the same at the end of the article. To start with considering the Dog objectContinueContinue reading “Explain Object.keys in JavaScript”

Video- Why You need the apply() and the call() methods in JavaScript

To pass value of ‘this’ object in a function apply and the call methods are used. https://youtu.be/1nG3FKN3KjU   The apply() and the call() methods are used to call a function indirectly. When you call a function using the apply() and the call() methods, that is called Indirect Invocation Pattern . The first parameter is alwaysContinueContinue reading “Video- Why You need the apply() and the call() methods in JavaScript”

Video – Various ways of creating a function in JavaScript

This video teaches you the various ways of creating a function in JavaScript. There are four ways a function can be created in JavaScript. They are as follows: 1. A function as a Statement 2. A function as an Expression 3. A function as an Arrow function 4. A function using Function constructor   https://youtu.be/1koTc_lhZLUContinueContinue reading “Video – Various ways of creating a function in JavaScript”

Five Things about JavaScript delete operator

A better understanding of delete operator is necessary for JavaScript developers. As the name suggests, the delete operator deletes properties from the object.  You can delete a property as shown below: It returns true on successful deletion. However, in some cases, it may return true even if it does not delete a property. In thisContinueContinue reading “Five Things about JavaScript delete operator”