๐ Topic Summary
Form input validation is the process of ensuring that the data entered by a user into a web form is correct, complete, and secure before it's processed. It's a crucial aspect of web development, as it helps prevent errors, improves data quality, and enhances the overall user experience. By implementing validation techniques, developers can catch mistakes early on, guide users towards providing accurate information, and protect their websites from potential security vulnerabilities. This worksheet will introduce you to some fundamental concepts and techniques related to form validation.
๐งฎ Part A: Vocabulary
Match the term with its correct definition. Write the number of the definition next to the term.
| Term |
Definition Number |
| 1. Data Type Validation |
|
| 2. Regular Expression |
|
| 3. Client-Side Validation |
|
| 4. Server-Side Validation |
|
| 5. Required Field |
|
- Ensuring a field cannot be left empty.
- Validation performed on the user's web browser.
- A sequence of characters that define a search pattern.
- Verification of data on the web server.
- Confirming data conforms to a specific type (e.g., integer, string, email).
โ๏ธ Part B: Fill in the Blanks
Form validation is crucial for ensuring data ______ and preventing _______. ________ validation happens in the browser, while ________ validation occurs on the server. One common technique is using ________ to match specific patterns.
๐ค Part C: Critical Thinking
Why is it important to perform both client-side and server-side validation? Explain your reasoning.