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siam form validation

form validation resourse

This bootstrap css example is contributed by Anonymous, on 14-May-2026. Component is made with bootstrap css v.4.6. It is responsive.

Tags: Form

Author Anonymous

187

v.4.6

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<form id="contactForm" class="needs-validation" novalidate>
    
    <div class="mb-3">
        <label for="userName" class="form-label">Name</label>
        <input type="text" class="form-control" id="userName" placeholder="Enter your name" required minlength="3">
        <div class="invalid-feedback">Please enter your name (at least 3 characters).</div>
    </div>

<div class="mb-3">
        <label for="userEmail" class="form-label">Email</label>
        <input type="email" class="form-control" id="userEmail" placeholder="Enter your email" required>
        <div class="invalid-feedback">Please provide a valid email address.</div>
    </div>

<div class="mb-3">
        <label for="userPhone" class="form-label">Phone</label>
        <input type="tel" class="form-control" id="userPhone" placeholder="017XXXXXXXX" pattern="[0-9]{11}" required>
        <div class="invalid-feedback">Please enter a valid 11-digit phone number.</div>
    </div>

<div class="mb-3">
        <label for="userAddress" class="form-label">Address</label>
        <input type="text" class="form-control" id="userAddress" placeholder="Enter your address" required>
        <div class="invalid-feedback">Address is required.</div>
    </div>

<div class="mb-3">
        <label for="userMessage" class="form-label">Messages</label>
        <textarea class="form-control" id="userMessage" rows="4" placeholder="Write your message..." required></textarea>
        <div class="invalid-feedback">Please write a message.</div>
    </div>

<div class="d-grid">
        <button type="submit" class="btn btn-primary">Send Message</button>
    </div>
</form>

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