typepause-validate/index.html at main · venkatas/typepause-validate · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
  <title>Smart Form Validation POC</title>
  <style>
    body {
      font-family: Arial, sans-serif;
      margin: 2rem;
    }
    .form-group {
      margin-bottom: 1.5rem;
    }
    input {
      padding: 0.5rem;
      font-size: 1rem;
      width: 100%;
    }
    .error {
      color: red;
      margin-top: 0.3rem;
      font-size: 0.9rem;
    }
  </style>
</head>
<body>
  <h2>Smart Validation Form</h2>

  <div class="form-group">
    <label>Email Address</label>
    <input type="text" id="emailInput" placeholder="Enter your email" />
    <div class="error" id="emailError"></div>
  </div>

  <div class="form-group">
    <label>Credit Card Number</label>
    <input type="text" id="cardInput" placeholder="Enter your credit card number" />
    <div class="error" id="cardError"></div>
  </div>

  <div class="form-group">
    <label>Aadhaar Number</label>
    <input type="text" id="aadhaarInput" placeholder="Enter your Aadhaar number" />
    <div class="error" id="aadhaarError"></div>
  </div>

  <div class="form-group">
    <label>Mobile Number</label>
    <input type="text" id="mobileInput" placeholder="Enter your mobile number" />
    <div class="error" id="mobileError"></div>
  </div>

  <script>
    const validators = [
      {
        inputId: "emailInput",
        errorId: "emailError",
        regex: /^[^\s@]+@[^\s@]+\.[^\s@]+$/,
        errorText: "⚠️ Please enter a valid email address"
      },
      {
        inputId: "cardInput",
        errorId: "cardError",
        regex: /^\d{16}$/,
        errorText: "⚠️ Credit card number must be 16 digits"
      },
      {
        inputId: "aadhaarInput",
        errorId: "aadhaarError",
        regex: /^\d{12}$/,
        errorText: "⚠️ Aadhaar number must be 12 digits"
      },
      {
        inputId: "mobileInput",
        errorId: "mobileError",
        regex: /^[6-9]\d{9}$/,
        errorText: "⚠️ Mobile number must be 10 digits and start with 6-9"
      }
    ];

    let isPageVisible = true;
    document.addEventListener("visibilitychange", () => {
      isPageVisible = !document.hidden;
    });

    validators.forEach(({ inputId, errorId, regex, errorText }) => {
      const input = document.getElementById(inputId);
      const error = document.getElementById(errorId);
      let typingTimer, lastKeyTime = 0;

      input.addEventListener("input", () => {
        const now = Date.now();
        const typingSpeed = now - lastKeyTime;
        lastKeyTime = now;

        clearTimeout(typingTimer);
        error.textContent = "";

        const wait = Math.min(Math.max(typingSpeed * 1.5, 800), 2000);

        typingTimer = setTimeout(() => {
          if (!isPageVisible) return;
          const val = input.value.trim();
          if (!val) {
            error.textContent = "";
            return;
          }
          if (!regex.test(val)) {
            error.textContent = errorText;
          } else {
            error.textContent = "";
          }
        }, wait);
      });
    });
  </script>
</body>
</html>