JS is a programming language with direct support to object oriented methodologies. It facilitates inclusion of certain executable data along with it. Hence we can say that, with the usage of JS, a given web page will no longer remains a store house of static data but it can also maintain dynamic data which can interact with the users, dynamically create HTML context and also controls the browsers action.
- It provides an easy way of accessing document objects as well as it can manipulate almost all of these objects.
- It gives attractive animations with a less download time for the multimedia data types.
- A page becomes useless if the script is not working.
- Complex scripts take longer starting and running time.
- It does not support the standard set of objects.
Web sites can be made dynamic and interactive without using JS. The alternatives are as follows.
- Python : The language is still progressing in the area of writing A web browser that is written in python already exist. By using this web browser we can run python applets. In next few years, python will boom in the area of client-side scripting.
- Perl : Perl is often used for server-side CGI scripting. The reason being, its text manipulation nature. For client-side work Perl is available through Pearlscript (Perl’s subset). Pearlscript can also be used for writing Active server pages. The drawback of Perl is its complexity.
- VBScript : Browser applications that must run only in Internet explorer, can be built using VBScript. Despite of its platform-specific nature VBScript is only available for Microsoft Windows Operating Systems). It is widely used.
- Java : Good networked applications can be built by using Java, even though it is not a scripting language. Data validation at client-side, and menus are the benefits of using Java. However, data validation can be very slow.