VerifyJS is a lightweight, customizable JavaScript-based CAPTCHA system that helps prevent automated bot interactions on web forms. It generates random CAPTCHA images that users must solve to verify their human identity.

• ✅ Customizable CAPTCHA settings (digits, uppercase, special characters)
• 🔄 Refresh button to generate a new CAPTCHA
• 🎨 Adjustable CAPTCHA image size
• 📜 Simple validation method
• 🛡️ Prevents bots from automated form submissions

Check out a live demo: Click for demo

1. Clone the repository or download the files:

   git clone https://github.com/codesuab/verifyjs.git

2. Include the JavaScript file in your HTML:

   <script src="core/verify.js"></script>

3. Or include the minified JavaScript file in your HTML:

   <script src="core/verify.min.js"></script>

Include the following code in your HTML file:

<div id="captchaForm">
  <div class="captchawraper">
    <img id="captcha" width="200" height="50" alt="CAPTCHA" />
  </div>
  <div class="fild">
    <input type="text" id="captchaInput" required />
    <button type="button" onclick="captchaRefresh()">Refresh</button>
  </div>
  <button onclick="validate()">Submit</button>
</div>

Configure VerifyJS in your script:

// Configure VerifyJS
verifyJS({
  totalDigit: 4,        // Number of characters in CAPTCHA
  number: true,         // Allow numbers
  uppercase: false,     // Disable uppercase letters
  specialsCharacter: false, // Disable special characters
  width: 140,           // CAPTCHA image width
  height: 50,           // CAPTCHA image height
}).vJSConfig();

// Set image on page load
window.onload = () => {
  verifyJS().vJSImgSrc("#captcha");
};

// Refresh CAPTCHA image
function captchaRefresh() {
  verifyJS().vJSImgRefreshSrc("#captcha");
}

// Validate CAPTCHA input
function validate() {
  const captchaField = document.getElementById("captchaInput").value;
  let status = verifyJS().vJSCheck(captchaField);
  if (status) {
    alert("You passed the CAPTCHA!");
  } else {
    alert("Sorry, try again!");
  }
}

Modify these settings to customize your CAPTCHA:

If you'd like to improve VerifyJS, feel free to fork the repository and submit a pull request.

This project is licensed under the MIT License.

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