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Unit 15 – Handling Forms with JavaScript

Handling Forms with JavaScript

Duration: 6 minutes

Greetings, web artisans!

A website without interactivity is like a novel with blank pages. One of the key elements to facilitate interaction between users and your website is through forms. They gather data, feedback, and user preferences.

With JavaScript, we can manipulate these forms, enhancing user experience and data collection. Ready to weave magic with forms and JS? Let’s dive in!

Understanding Forms and JavaScript

HTML forms are one of the main points of interaction between a user and a web application. JavaScript allows us to:

  • Access form data: Extracting values users have entered.
  • Validate form data: Ensuring the user provided all required data in the correct format.
  • Enhance interactivity: Dynamically changing form options based on user input.

Here’s a basic example of a feedback form:

Name:

Feedback:

Using JavaScript, you can retrieve values:

let form = document.getElementById("feedbackForm");
form.addEventListener("submit", function(event) {
event.preventDefault(); // to prevent form submission
let userName = document.getElementById("name").value;
let userFeedback = document.getElementById("feedback").value;
console.log("Name:", userName);
console.log("Feedback:", userFeedback);
// You can now process or store this data as needed
});

Exercise

Create a feedback form and retrieve user input using JS.

  • Design a simple form with at least 3 fields: Name, Email, and Feedback.
  • Implement JavaScript to validate that all fields are filled before submission.
  • Once validated, retrieve the input data and display it in a dedicated section on the webpage or console log it.

Conclusion

Bravo! With forms seamlessly integrated and manipulated using JavaScript, you’ve given voice to the users of your website. Now, they can communicate, provide feedback, or even register and log in. As you proceed, remember that forms are more than just data collectors; they’re bridges connecting users to your applications.

Treat them with care, ensuring usability and security. Onward to more interactive endeavors!

You've completed this module!

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