Client-Side vs Server-Side Programming Languages


In the previous chapter, we learned about the basics of JavaScript, history and how to use JavaScript with example programs. 
In this chapter, we will learn about Client-side vs Server-side Programming Languages and how a client-side programming language works.

Basic Background

Web development is all about communication and data exchange. This communication takes place via two parties over the HTTP protocol.
These parties are: 
Client side and Server Side


The Server is responsible for serving the web pages depending on the client/end-user requirement. It can be either static or dynamic.


A client is a party that requests pages from the server and displays them to the end-user. In general a client program is a web browser.
Example | Working
We can explain this entire mechanism using the following:
  • The user opens his web browser (client)
  • The user starts browsing
    (for example
  • The client forwards this request to the server, for accessing their web page.
  • The server then acknowledges the request and replies back to the client program.
    (An access link to that web page)
  • The client then receives the page source and renders it.
    (Into a viewable/under a stable website)
  • Now the user types into the search bar
  • The client then submits data to the server
  • The server processes the data and replies back with a related search result
  • The client again renders it back for the user's view
  • The user gets access to the requested link.

Server-side Programming

Server-side programming can be explained as:
It is the general name for the kind of program that runs directly on the server.
Or we can say that server-side programming must deal with dynamic content. It runs on the server. Most web pages are not static since they deal with searching databases.

Server-side Uses

  • It processes the user input
  • Displays the requested pages
  • Structure of web applications
  • Interaction with servers/storages
  • Interaction with databases
  • Querying the database
  • Encoding of data into HTML
  • Operations over databases like delete, update.

Server-side Languages Example

There are several languages that can be used for server-side programming:
  • PHP
  • ASP.NET (C# OR Visual Basic)
  • C++
  • Java and JSP
  • Python
  • Ruby on Rails and so on.
Server-side Example
  1. // This is a sample C# code.    
  2. using System;    
  3. // namespace    
  4. class ServerSide    
  5. {    
  6.     public static void Main()    
  7.     {    
  8.         System.Console.WriteLine(“Hello C# Corner”);    
  9.         // printing a line    
  10.     }    
  11. }  

Client-side Programming

Similarly to server-side programming, client-side programming is also the name of the entire program that runs on the client. 
Or we can say that client-side programming mostly deals with the user interface with which the user interacts in the web. It is mostly a browser, in the user's machine, that runs the code and is mainly done in any scripting language like JavaScript (or we can use Flash instead of JavaScript or VNScript).

Client-side Uses

  • Makes interactive web pages
  • Make stuff work dynamically
  • Interact with temporary storage
  • Works as an interface between user and server
  • Sends requests to the server
  • Retrieval of data from Server
  • Interact with local storage
  • Provides remote access for client-server program

Client-side Languages Example

There are many client-side scripting languages too.
  • JavaScript
  • VBScript
  • HTML (Structure)
  • CSS (Designing)
  • AJAX
  • jQuery etc.
(Some other languages also can be used on the basis of the modeling/designing /graphics/animations and for extra functionalities.)
Client-side Example
  1. // sample HTML code  
  2. <html>  
  3. <head>  
  4.     <title>Client Side </title>  
  5. </head>  
  6. <body>  
  7.     <h1>  
  8.         Hello C# Corner  
  9.     </h1>  
  10. </body>  
  11. </html> 


In this chapter, we learned about Client-side vs Server-side Programming Languages and how a client-side programming language works with an example program.
Abhishek Jaiswal
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