Enhance signup form with validation and animations

[alwin-m]

Added error and success status indicators for username, password, and confirm password fields. Implemented animations for form elements and updated form validation.

[alwin-m]

Confirm Password Check

Summary

This JavaScript snippet handles real-time validation of the Confirm Password field by checking whether the value matches the primary password input. It updates UI feedback instantly using color-coded messages.

Strengths

• Real-time validation: The use of an input event listener ensures instant feedback.
• Good UX cues: Color changes via CSS variables (var(--error) / var(--success)) provide quick user understanding.
• Simple and understandable: The logic is concise and readable.

Issues / Risks

• Variable name shadowing: Using const confirm overrides the global confirm() browser API. This is not a breaking issue but is considered bad practice.
• No debounce: The validation runs on every keystroke; harmless here, but debouncing could be considered for heavier logic.
• Missing null checks: If elements are not found in the DOM, this will throw errors.

Recommendations

1. Rename variable confirm to avoid shadowing: Example: confirmInput.
2. Add safety checks before applying listeners.
3. Optional: Use a small helper function for clarity.

Revised Example

// Confirm password check
const confirmInput = document.getElementById('confirm');
const confirmStatus = document.getElementById('confirm-status');

if (confirmInput && pass) {
  confirmInput.addEventListener('input', () => {
      const match = confirmInput.value === pass.value;
      confirmStatus.style.color = match ? 'var(--success)' : 'var(--error)';
      confirmStatus.textContent = match ? 'Passwords match' : 'Passwords do not match';
  });
}

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If you want, I can apply this improved version directly into your signup page document.