Привел обработку ошибок в примерах к единообразию

examples/react/src/components/SystemInfo.js

@@ -18,10 +18,6 @@ function SystemInfo() {
     })();
   });
 
-  if (!systemInfo) {
-    return null;
-  }
-
   return (
     <>
       <legend>Информация о системе</legend>

examples/script-tag/public/cert-list.js

@@ -7,7 +7,7 @@
   var $certificate = document.getElementById('certificate'),
     $createSignature = document.getElementById('createSignature'),
     $certificateDetails = document.getElementById('certificateDetails'),
-    $certificateError = document.getElementById('certificateError');
+    $certificateError = document.getElementById('certificateListError');
 
   $certificate.addEventListener('change', function handleCertSelection() {
     var thumbprint = $certificate.value;
@@ -26,6 +26,6 @@
       $certificate.appendChild($certOption);
     });
   }, function (error) {
-    $certificateError.textContent = '\n' + error.message;
+    $certificateError.textContent = error.message;
   });
 })();

examples/script-tag/public/create-sign.js

@@ -43,12 +43,12 @@
       }, function (error) {
         $signature.placeholder = 'Не создана';
 
-        $signatureError.textContent = '\n' + error.message;
+        $signatureError.textContent = error.message;
       });
     }, function (error) {
       $hash.placeholder = 'Не вычислен';
 
-      $hashError.textContent = '\n' + error.message;
+      $hashError.textContent = error.message;
     });
   });
 })();

examples/script-tag/public/get-env-info.js

@@ -16,6 +16,6 @@
   }, handleError);
 
   function handleError(error) {
-    $systemInfoError.textContent = '\n' + error.message;
+    $systemInfoError.textContent = error.message;
   }
 })();

examples/script-tag/public/index.html

@@ -18,11 +18,13 @@
             <select id="certificate" tabindex="-1" required>
                 <option disabled selected>Не выбран</option>
             </select>
+            <pre id="certificateListError"></pre>
+
             <details id="certificateDetails">
                 <summary>Информация о сертификате</summary>
                 <pre id="certificateInfo"></pre>
             </details>
-            <pre id="certificateError"></pre>
+            <pre id="certificateInfoError"></pre>
 
             <label>Тип подписи: *</label>
             <br>
@@ -44,6 +46,8 @@
 
             <label for="signature">Подпись (PKCS7):</label><br>
             <textarea id="signature" cols="80" rows="30" placeholder="Не создана"></textarea>
+            <pre id="signatureError"></pre>
+
             <p>
                 Для
                 <a href="https://www.gosuslugi.ru/pgu/eds/"
@@ -54,8 +58,6 @@
                 <br>
                 для отделенной подписи (или *.sig для совмещенной).
             </p>
-
-            <pre id="signatureError"></pre>
         </fieldset>
 
         <fieldset>

examples/script-tag/public/show-cert.js

@@ -7,7 +7,7 @@
   var $certificate = document.getElementById('certificate'),
     $certificateDetails = document.getElementById('certificateDetails'),
     $certificateInfo = document.getElementById('certificateInfo'),
-    $certificatesError = document.getElementById('certificatesError');
+    $certificatesError = document.getElementById('certificateInfoError');
 
   $certificateDetails.style.display = 'none';