How do I build a password strength meter in a machine coding interview?
Check the password against rules (length >= 8, uppercase, lowercase, number, special char) using regex. Count the passed rules as a score. Display a colored bar (red to green) and a criteria checklist. Update in real-time on input.
Verify This Answer
Cross-check this information using these trusted sources:
More FAQs in How to Build a Password Strength Meter in an Interview
Check rules with regex: length >= 8, /[A-Z]/ for uppercase, /[a-z]/ for lowercase, /[0-9]/ for numbers, /[^A-Za-z0-9]/ for special chars. Count the passed rules. Map the score to levels (very weak, weak, medium, strong, very strong).
/[A-Z]/ for uppercase, /[a-z]/ for lowercase, /[0-9]/ for numbers, /[^A-Za-z0-9]/ for special characters. Also check password.length >= 8 for minimum length.
Create a container div (background gray) and an inner fill div. Set the fill's width to (score / maxScore) * 100 + '%'. Change the background color based on score (red for weak, yellow for medium, green for strong). Use CSS transition for smooth changes.
Still have questions?
Browse all our FAQs or reach out to our support team