How-to articles, tricks, and solutions about OPERATOR

How to Check if a Variable is of Function Type

Read this JavaScript tutorial and learn several fast and useful methods that are invoked for checking whether the variable is of function type or not.

How to Check if Function Exists in JavaScript

In this tutorial, you will read and learn information about the two methods of checking whether a function exists in JavaScript or it has not been defined.

How to Get a Timestamp in JavaScript

Almost all the developers come across the question: how to get a timestamp in JavaScript. This tutorial will help you find the most efficient methods to use.

How to Sort a Multidimensional Array by Value

In this short tutorial, you will learn the most efficient ways to easily sort a multidimensional array by value using PHP. Just follow the steps below.

How to Unset a JavaScript Variable

Read this JavaScript tutorial to know why you cannot delete the property that is created with var. Also, know in which cases you shouldn’t use the operator.

How to Use "or" in Switch Case in PHP

In this snippet, you will figure out how to use the "or" operator in a switch case in PHP. Read on, check out and try the examples.

The Difference Between Null and Undefined in JavaScript

Read this JavaScript tutorial and get relevant information about the differences between null and undefined data types. Find out their similarities as well.