What is Form Validation?
Checking that user input meets expected rules before submitting it to the server.
Why It Matters
Validation prevents bad data from entering your system and helps users fix errors before they submit.
Real-World Example
Showing an error message when a user enters an email address without an @ symbol.
“Understanding terms like Form Validation matters because it helps you have better conversations with developers and make smarter decisions about your software. You do not need to be technical. You just need to know enough to ask the right questions.”
Related Terms
Validation
Checking that data meets requirements before processing it
Sanitisation
Cleaning user input to remove potentially harmful content
User Experience (UX)
The overall experience a person has when using a product, including how easy and pleasant it is to use.
Error Handling
Code that gracefully manages problems instead of crashing or showing confusing messages
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Related Terms
Error Handling
Code that gracefully manages problems instead of crashing or showing confusing messages
Validation
Checking that data meets requirements before processing it
Sanitisation
Cleaning user input to remove potentially harmful content
User Experience (UX)
The overall experience a person has when using a product, including how easy and pleasant it is to use.
Frontend
The part of a website or app that users see and interact with directly
React
A popular tool for building user interfaces, created by Facebook, that makes complex UIs easier to manage