Scripting Language Introduction
Scripting Language definition
An interpreter checks the syntax of the code and generates object code one source line at a time. The language is interpreted at run-time so that the instructions are executed immediately. There are two types of scripting languages.
Server side Scripting languages are run on a web server(back end ). This environment is known as Server side scripting environment.
The user issues a request and it is fulfilled by running a script, directly on the web server.
These languages are mostly used in interactive web sites that are connected to databases.
- PERL and
- Active Server Pages.
Advantages of Server side scripting Languages
These languages support high customization of the response based on the user's requirements.
Disadvantages of Server side scripting Languages
They impart more load to the web server.
They can introduce processing overhead that can decrease perfomance and force the user to wait for the page to be processed and recreated. Once the page is posted back to the server, the client must wait for the server to process the request and send the page back to the client.
They run on a browser(front end). This environment is known as Client side scripting environment.
The processing of the scripts takes place on the end users computer.
The source code of the requested service or web page is transferred from the web server to the end users computer over the internet and run directly in the browser.
The scripting language must be enabled on the client computer.
They make intractive and dynamic webpages.
They also interact with temporary storage and local storage and provide remote services for client-side application.
- VB script and
No load on the server since all the processing is done in the browser.
These languages are easier than server side scripting languages.
Disadvantages of Client side scripting Languages
Minimal customization of web pages.