JavaScript Form Validation – Explanation with Examples
JavaScript Form Validation – Explanation with Examples
What is Form Validation?
Form Validation means checking user input before submitting the form to the server.
👉 It ensures:
• Required fields are filled
• Correct format is entered (email, phone, password, etc.)
• Data is valid and meaningful
JavaScript validation improves:
• User experience
• Data accuracy
• Website security
Why Use JavaScript Form Validation?
• Prevent empty submissions
• Check correct input format
• Reduce server load
• Give instant error messages