Why server side scripting

It cannot be basically used to connect to databases on web server. These scripts cannot access file system that resides at web browser. Pages are altered on basis of users choice. Server side scripting : Web servers are used to execute server side scripting. They are basically used to create dynamic pages. It can also access the file system residing at web server. Server-side environment that runs on a scripting language is a web-server. Scripts can be written in any of a number of server-side scripting language available.

It is used to retrieve and generate content for dynamic pages. It is used to require to download plugins. In this load times are generally faster than client-side scripting. When you need to store and retrieve information a database will be used to contain data. These work well together and can make the creation of a complete application far less painful, with lots of helpful tutorials available.

Client-side scripting can respond to user input to display different content based on specific actions, but all the actual data has to be provided by the server beforehand. Sites that use a lot of client-side scripting can perform well and take some of the load off the server, but it can also be difficult to implement advanced functionality using client-side techniques alone.

These scripts run on a web server and respond to client requests via HTTP to deliver dynamic and customised content to the user. More importantly, server-side scripting is required to access or store persistent data like user profile information; whether it involves pulling data from a file server, database or mail server, this can all be done with a server-side scripting language like PHP.

One of the key differences between the client and server-side scripting is that server-side code is always responsible for providing and storing any resources needed by the client. This can either be done as the page loads, or interactively as the user makes requests and changes using techniques such as AJAX — more on that below.

This means the source code from server-side scripting is usually completely hidden from the end user. Therefore, never trust client-side data unless it can be properly authenticated. There are many techniques for supporting authentication, with JSON Web Tokens being one of the most popular solutions. One of the downsides of server-side scripting, however, is that, simply put, it means more work for the server. Lots of scripts running on the server can result in slower performance, especially when client requests to the server occur frequently.

This combination of server-side and client-side scripting languages enables individual parts of a webpage to be updated almost instantly, without having to load a whole new page. JavaScript is an important client-side scripting language and widely used in dynamic websites.

The script can be embedded within the HTML or stored in an external file. External scripts are sent to the client from the server when they are requested. Scripts can also be executed as a result of the user doing something like pressing a page button. Client-side scripts can often be looked at if the user chooses to view the source code of the page.

JavaScript code is widely copied and recycled.