Ueberprueft ob erforderliche Felder ausgefuellt worden sind

public/js/scriptJoinPage.js

+function checkFormBeforePrinting () {
+  var requiredElements = document.querySelectorAll("[required]");
+  var passed = true;
+  for (i = 0; i < requiredElements.length; i++) {
+    if(requiredElements[i].value == "") {
+      passed = false;
+      requiredElements[i].style.backgroundColor = "#ff9999";
+    }
+    else {
+      requiredElements[i].style.backgroundColor = "#ffffff";
+    }
+  }
+  if(passed) {
+    window.print();
+  }
+}
\ No newline at end of file

resources/views/spende/beitritt.blade.php

@@ -105,5 +105,5 @@
 		<p>{{ trans('beitritt.anweisung.5') }}</p>
 	</div>
 	<p>{{ trans('beitritt.anweisung.6') }}</p>
-	<button type="button" class="btn btn-lg btn-primary noprint" onclick="window.print();">{{ trans('beitritt.anweisung.7') }}</button>
+	<button type="button" class="btn btn-lg btn-primary noprint" onclick="checkFormBeforePrinting();">{{ trans('beitritt.anweisung.7') }}</button>
 @endsection