Practice Form Validation Example (6) - JavaScript for the Front End - Full Stack Web Development Basics
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Form Validation Example

Practice - Form Validation Example

Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What is the purpose of form validation?

💡 Hint: Think about what happens if you submit incorrect data.

Question 2 Easy

How do you prevent form submission in JavaScript?

💡 Hint: What method can stop actions from occurring?

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

Why do we use event.preventDefault() in form validation?

To submit the form immediately
To prevent the default action until validations are complete
To clear the form fields

💡 Hint: What happens without this method?

Question 2

True or False: A form can be submitted with empty required fields if validation is not implemented.

True
False

💡 Hint: What occurs without any checks in place?

1 more question available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Create a validation function that checks if a form meets all requirements (username is not empty, password meets length, and both fields are filled).

💡 Hint: Think logically about the order of checks and how to use logical operators.

Challenge 2 Hard

Discuss a real-world scenario where improper form validation led to data breaches and suggest preventive measures.

💡 Hint: Reflect on news articles about data breaches and their cause.

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Reference links

Supplementary resources to enhance your learning experience.