📌 Objective: Learn how to create styled forms using Bootstrap and implement built-in form validation for user input.

🔹 1. Introduction to Bootstrap Forms

Forms are essential for user input, authentication, and data submission. Bootstrap provides pre-styled form controls, labels, and validation features.

💡 Why Use Bootstrap Forms?
✔️ Pre-styled form fields that look consistent across browsers.
✔️ Built-in validation classes for error handling.
✔️ Easily customizable using Bootstrap’s grid system.

🔹 2. Bootstrap Form Basics

Forms in Bootstrap are built using the <form> element and various input fields.

✅ Example: Basic Form

🔹 What happens?

• The form fields automatically get spacing and styling using .form-control.

🔹 3. Bootstrap Form Layouts

1️⃣ Inline Forms

Inline forms display inputs next to each other instead of stacking them.

✅ Example: Inline Form

🔹 What happens?

• The form fields appear in one row instead of stacking.

2️⃣ Horizontal Form Layout

Use Bootstrap’s grid system to create a horizontal form.

✅ Example: Horizontal Form

🔹 What happens?

• The label is in one column and the input field is in another.

🔹 4. Bootstrap Form Controls

1️⃣ Input Types

Bootstrap supports various input types such as text, password, email, number, date, and file.

✅ Example: Input Types

2️⃣ Floating Labels

Floating labels move above the input field when users type.

✅ Example: Floating Labels

🔹 What happens?

• The label floats above the input field when clicked.

3️⃣ Select Dropdowns

Use .form-select to create a styled dropdown menu.

✅ Example: Select Dropdown

🔹 What happens?

• A styled dropdown menu appears.

4️⃣ Checkboxes & Radio Buttons

Use .form-check for checkboxes and radio buttons.

✅ Example: Checkboxes & Radios

🔹 What happens?

• The checkbox and radio buttons are styled properly.

🔹 5. Bootstrap Form Validation

1️⃣ Client-Side Validation

Bootstrap provides built-in validation for form fields.

✅ Example: Form Validation

🔹 What happens?

• If the field is empty, an error message appears.
• .invalid-feedback shows validation messages.

2️⃣ JavaScript-Powered Validation

You can add JavaScript validation to enhance error handling.

✅ Example: JavaScript Form Validation

🔹 What happens?

• The script prevents form submission if fields are empty.
• Adds Bootstrap’s validation classes dynamically.

📝 Lesson Recap Quiz

🎯 Test your knowledge of Bootstrap forms.

📌 Multiple-Choice Questions (MCQs)

1️⃣ Which class is used for a Bootstrap-styled input field?
a) .input-field
b) .form-control
c) .form-input
d) .bootstrap-input

✅ Correct Answer: b) .form-control

2️⃣ What class is used for a Bootstrap dropdown select menu?
a) .form-dropdown
b) .form-select
c) .select-menu
d) .dropdown-control

✅ Correct Answer: b) .form-select

3️⃣ Which Bootstrap class is used for validation error messages?
a) .form-error
b) .alert-warning
c) .invalid-feedback
d) .form-danger

✅ Correct Answer: c) .invalid-feedback

📌 True or False

4️⃣ Bootstrap supports floating labels inside form fields.
✅ Answer: True

5️⃣ .form-group is required to use Bootstrap forms.
✅ Answer: False (It is optional.)

🎯 Practical Challenge

✅ Create a Bootstrap form with:

• Floating labels
• Styled checkboxes & radio buttons
• A dropdown select field
  ✅ Implement Bootstrap validation with error messages.
  ✅ Post your solution in the discussion forum for feedback!

🎓 Lesson Summary

✅ Bootstrap forms (.form-control) provide consistent styling for input fields.
✅ Floating labels create modern UI forms.
✅ Form validation (.invalid-feedback) prevents incorrect user input.
✅ Bootstrap supports checkboxes, radio buttons, and dropdowns.