few fixes

index.html

@@ -18,7 +18,7 @@
         <div class="content-panel">
             <div class="nav-bar">
                 <button id="review-button" class="navigation nav-right"><b>☰</b></button>
-                <button class="submit-button navigation nav-right"><b>submit</b></button>
+                <button id="nav-submit-button" class="submit-button navigation nav-right"><b>submit</b></button>
                 <button id="options-button" class="navigation nav-right"
                     title="click to load new packet or manage saved answers">options</button>
                 <button id="review-overlay-button" class="navigation nav-right"

js/interact.js

@@ -5,8 +5,8 @@ export function submitAnswers(window, db) {
   console.log(
     getJsonAnswers(window, db).then((a) => {
       let json = {
-        "eid": window.eid,
+        eid: window.eid,
-        "answers": JSON.stringify(a),
+        answers: JSON.stringify(a),
       };
       postAnswers(json);
     })
@@ -34,10 +34,12 @@ export function getJsonAnswers(window, db) {
 export function postAnswers(ans) {
   $("#progress").html("Submitting answers...");
   // ans = {"test" : 1}
-  console.log(ans)
+  console.log(ans);
-  $.post(window.config.exam_submit_url, ans, null, "json").done((data) => {
+  $.post(window.config.exam_submit_url, ans, null, "json")
-    console.log(data);
+    .done((data) => {
+      console.log("returned data", data);
       if (data.success) {
+        $("#submit-error-overlay").remove();
         if (data.question_count == window.number_of_questions) {
           let ret = confirm(
             `${data.question_count} answers sucessfully submitted. Click OK to finish the exam.`
@@ -65,16 +67,35 @@ export function postAnswers(ans) {
           alert(`${data.question_count} answers sucessfully submitted.`);
         }
       } else {
+            submissionError(data, ans);
+      }
+    })
+    .fail((e) => {
+      // Will occur with server error such as 500
+      console.log("error", e);
+      submissionError(e, ans);
+    });
+  // $.post( "http://localhost:8000/submit_answers", JSON.stringify(ans));
+}
+
+function submissionError(data, ans) {
+  // error will not be defined with server errors
+  if (data.error != undefined) {
     alert(`Error submitting answers: ${data.error}`);
+  } else {
+    alert(`Error submitting answers`);
+  }
   var docHeight = $(document).height();
 
   $("body").append(
-        `<div id='overlay'><span style='color: white'><p>An error has occured when submit your answers. A copy of your answers are displayed below, you may wish to save a copy. Please refresh this page to continue.</p>${JSON.stringify(
+    `<div id='submit-error-overlay'><span style='color: white'><p>An error has occured when submit your answers. A copy of your answers are displayed below, you may wish to save a copy. Please try submitting again or refresh this page to continue.</p>${JSON.stringify(
       ans
     )}</span></div>`
   );
 
-      $("#overlay").height(docHeight).css({
+  $("#nav-submit-button").prependTo("#submit-error-overlay");
+
+  $("#submit-error-overlay").height(docHeight).css({
     opacity: 0.9,
     position: "absolute",
     top: 0,
@@ -86,7 +107,4 @@ export function postAnswers(ans) {
     "-webkit-user-select": "text",
     "z-index": 5000,
   });
-    }
-  });
-  // $.post( "http://localhost:8000/submit_answers", JSON.stringify(ans));
 }