The document discusses the differences between client-side and server-side validation of user input, highlighting that server-side validation is preferable for security as it protects against malicious users. Server-side validation involves sending input to the server for scrutiny using languages like ASP.NET or PHP, while client-side validation occurs directly in the user's browser to provide immediate feedback. Both methods have their advantages, but server-side validation is deemed more secure overall.

1. DIFFERENCE BETWEEN CLIENT
SIDE AND SERVER SIDE
VALIDATION
S T E V E N G E F F E N

2. STEVEN GEFFEN
There is a usual question that which type of validations is
better or best? Server side validation or Client side
Validation ?
If the user request requires server resources to validate the
user input, you should use Server Side Validation. If the
user request does not require any server resources to
validate the input , you can use Client Side Validation.

3. STEVEN GEFFEN
Server Side Validation :
In the Server Side Validation, the input submitted by the
user is being sent to the server and validated using one of
server side scripting languages such as ASP.Net, PHP etc.
After the validation process on the Server Side, the
feedback is sent back to the client by a new dynamically
generated web page. It is better to validate user input on
Server Side because you can protect against the malicious
users, who can easily bypass your Client Side scripting
language and submit dangerous input to the server.

4. STEVEN GEFFEN
Client Side Validation:
When you perform a Client Side Validation, all the user
inputs validated in the user's browser itself.
For example, if the user enter an invalid email format, you
can show an error messeage immediately before the user
move to the next field, so the user can correct every field
before they submit the form.

5. STEVEN GEFFEN
As both the validation methods have their own
significances, but the Server side validation is more
SECURE!

6. STEVEN GEFFEN
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7. THANKS FOR
WATCHING
S T E V E N G E F F E N