This tutorial will explain you how to display loading or processing gif image until the web page loads completely using […]

This tutorial will show you how to fire JavaScript function on button click and prevent the form submission. First, specify […]

Regular expressions are search patterns that can be used to find text that matches a given pattern. RegExp can be […]

A JavaScript string can be both a primitive data type or an object. As a primitive type, it joins with four […]

An array is an ordered collection of elements. JavaScript arrays are used to store multiple values in a single variable. […]

The Date object contains a number representing the date and time, rather than a string representation. Dates are managed through […]

JavaScript functions provide a way to encapsulate a block of code in order to reuse the code several times. A […]

Check that a variable is defined, is a string, and is not empty. The typeof operator // true if variable […]

The typeof operator returns the primitive type of the variable. If the variable is of object type or null then […]

JavaScript was developed by Netscape in 1995. At that time its name was LiveScript. Later on Sun Microsystem joined the […]