Javascript data-types are used for storing different types of data. They general data-types are strings, null, numbers, boolean etc.

Javascript numbers can be directly assigned to a variables without any need of declaring data-type. Assginment, type checking, nan operations

Javascript provides properties and methods for string handling they are replace(), split() methods and length property etc.

Javascript variables are used to store temporary information in to an storage container called variable while program is being executed.

This is Guide to web development process and which softwares are used to developments. The processes involved are explained in detail.