5. HTML Forms, Input Types & Validation Controls

Theory & Practical Manual: Form action, method, inputs, labels, selects, textareas & attributes

Module 1: HTML Forms & Input Controls Theory

Collecting interactive user inputs.

Core Theory & Principles

<form> wraps form input elements.
action specifies processing script URL.
method specifies HTTP protocol: GET (appends data to URL) or POST (sends data in request body).
Input types: text, password, email, number, date, color, file, checkbox, radio, submit.
<label> caption bound to input via for attribute matching input id.

Practical Key Takeaways

Mastering HTML Forms & Input Controls Theory builds fundamental development capability. Review practical code and outputs carefully.

💻 Practical Code Example - HTML Forms & Input Controls Theory

<form style="background: rgb(30, 41, 59); padding: 20px; border-radius: 8px; color: white;">
    <label for="username">Username:</label><br>
    <input type="text" id="username" placeholder="Enter username" required style="width:100%; padding:8px; margin:6px 0 12px 0;"><br>
    <label for="email">Email Address:</label><br>
    <input type="email" id="email" placeholder="gagan@example.com" required style="width:100%; padding:8px; margin:6px 0 12px 0;"><br>
    <button type="submit" style="padding:10px 20px; background:rgb(74, 222, 128); color:rgb(15,23,42); font-weight:bold; border:none; border-radius:6px; cursor:pointer;">Submit Application</button>
</form>

📤 Expected Output / Browser Rendered Result:

Rendered user form with validated text field, email field, and submit button.