Category: JavaScript

How do we differentiate between ‘null’ and ‘undefined’, in JavaScript? what do ‘undefined’ and ‘null’ have in common? Read on to understand.

JavaScript has dynamic types, hence a single variable can be used as different types. There are 7 native types in JavaScript.

How does the inheritance work in JavaScript? Is there multiple inheritance support in JavaScript?  JavaScript inheritance explained in simple terms.
Inheritance is one of the OOP features in the JavaScript. JavaScript utilizes the built-in prototype property to get the inheritance implemented. JavaScript allows us to associate a prototypical object with any constructor function.

One of the easiest ways of defining an Object is using a constructor function. Object Constructor function helps to create different instances of an object  using the same function.

This article shows how to combine two objects into a single object. One of the simplest ways to combine multiple js objects into single object.

This tutorials briefs about how to check multiple conditions in single case in JavaScript switch statement.

There are many javaScript engines currently available. Different browsers use different javaScript engines.  Script performance on browsers depend on the javaScript engine used in the browser.

Add new items to array – JavaScript

This article shows how to add new items to an array. To add new items to an array, you need to use .push() method. The push() method adds new elements to the end of an array. Below is the syntax to use .push() method.

The following function will return the last date of the month. This function is very much useful while calculating the last date of a particular month. The arguments passed into the function should be number.