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Regex Patterns for Form Data Validation

Coding validation intermediate 🤖 ChatGPT 👁 2 views

📝 The Prompt

Provide production-ready regex patterns for validating the following form fields: (1) Email address (RFC 5322 compliant, practical version), (2) Phone number (international format with optional country code), (3) Strong password (min 8 chars, uppercase, lowercase, number, special character), (4) URL (HTTP/HTTPS with optional path and query string), (5) Date in DD/MM/YYYY and YYYY-MM-DD formats, (6) Credit card number (major card types with optional spaces/dashes), (7) US ZIP code and international postal code, (8) IPv4 and IPv6 addresses. For each pattern: provide the regex, explain what it matches and excludes, and give a JavaScript/Python code snippet for implementation.

🎯 What this prompt does

This AI prompt helps you regex patterns for form data validation. Designed for validation workflows in the coding category, it's a intermediate-level prompt you can copy directly into ChatGPT to get instant, production-ready results.

Use it when you need a intermediate prompt that produces clear, actionable output without wrestling with trial-and-error wording. Just copy, customize, and run.

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🚀 How to use this prompt

  1. Copy the prompt using the 📋 button above.
  2. Open ChatGPT (or Claude, Gemini, Perplexity, or your preferred LLM).
  3. Paste the prompt into a new chat. Add any extra context about your situation if helpful.
  4. Run the prompt and review the AI's response. Most outputs are usable immediately.
  5. Iterate if needed — if the tone, length, or structure isn't quite right, reply with "make it shorter", "use bullet points", or "make it more formal" and the AI will refine it.

💡 Tips for better results

  • Tailor the prompt to your specific context — the more detail you give, the better the output.
  • If the first output isn't quite right, ask the AI to refine, rewrite, or add more detail — iteration is key.
  • For long outputs, ask for a section at a time (e.g. 'start with the introduction only') to keep quality high.
  • Combine this with other coding prompts to build an end-to-end workflow.
  • Save your favorite variations — small wording tweaks often produce noticeably different results.
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✨ What you'll get

When you run this prompt, expect ChatGPT to return:

  • A directly usable validation output tailored to the details you provided
  • Clear structure (headings, bullets, or numbered sections) that you can drop into your workflow
  • Content that matches your specified tone and context
  • Results in under 30 seconds — no manual drafting required

Need a different angle? Just ask follow-up questions. The AI will adjust without you starting over.

🔄 3 variations to try

1

Make it more formal

Add "Use a formal, professional tone suitable for enterprise clients" at the start of the prompt.

2

Ask for multiple options

Append "Give me 5 alternative versions, each with a different angle or approach." after the main instruction.

3

Request structured output

Add "Return the response as a markdown table (or bullet list, or JSON)" so you can paste the result directly into your docs or code.

🏷 Tags

🔎 Find more prompts like this

Browse 76 more coding prompts or search the full library.

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