Init commit

js/captcha.js

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+
+
+    // captcha source origin: https://codepen.io/hirensojitra/pen/OJBpVvB
+
+    $(document).ready(function () {
+
+        // Generate captcha on page load
+
+        generateCaptcha();
+
+        // Handle captcha refresh button click
+
+        $("#refresh-captcha").click(function () {
+
+          generateCaptcha();
+
+          $("#captcha-input").val("");
+
+        });
+
+        // Handle form submit
+
+        $("#captcha-form").submit(function (event) {
+
+          
+
+          // Validate captcha
+
+          var captchaInput = $("#captcha-input").val();
+
+          var captchaCode = sessionStorage.getItem("captchaCode");
+
+          if (captchaInput != captchaCode) {
+
+            alert("Nesprávně opsaný CAPTCHA kód. Dodržujte velká-malá písmena!");
+
+            event.preventDefault();
+
+            generateCaptcha();
+
+            $("#captcha-input").val("");
+
+            return;
+
+          }
+
+          // Form validation successful, submit form
+
+          alert("E-mail úspěšně odeslán. Kopie dorazí na Vaší adresu.");
+
+          //$("#captcha-form").submit();
+
+          generateCaptcha();
+
+        });
+
+  
+
+        // Define the function generateCaptcha()
+
+        function generateCaptcha() {
+
+          // Get the canvas element with ID captcha and create an instance of its canvas rendering context
+
+          var a = $("#captcha")[0],
+
+              b = a.getContext("2d");
+
+            // Clear the canvas
+
+            b.clearRect(0, 0, a.width, a.height);
+