How-to articles, tricks, and solutions about OPERATOR

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.

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.

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.

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.

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.

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.

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