fix: 选项支持26英文字母

client/src/pages/player/chapterExam/chapterExam2.vue

@@ -159,35 +159,15 @@ import Base64 from 'Base64'
 
 import VEditor from '@/components/editor.vue'
 
-var getLetter = val => {
-  switch (val) {
-    case 0:
-      return 'A'
-    case 1:
-      return 'B'
-    case 2:
-      return 'C'
-    case 3:
-      return 'D'
-    case 4:
-      return 'E'
-    case 5:
-      return 'F'
-    case 6:
-      return 'G'
-    case 7:
-      return 'H'
-    case 8:
-      return 'I'
-    case 9:
-      return 'J'
-    case 10:
-      return 'K'
-    case 11:
-      return 'L'
-    case 12:
-      return 'M'
+const A_Z = (function() {
+  const result = []
+  for (let i = 0; i < 26; i++) {
+    result.push(String.fromCharCode(65 + i))
   }
+  return result
+})()
+var getLetter = val => {
+  return A_Z[val]
 }
 
 export default {

client/src/pages/player/exam/exam.vue

@@ -183,35 +183,16 @@ import Base64 from 'Base64'
 
 import VEditor from '@/components/editor.vue'
 
-var getLetter = val => {
-  switch (val) {
-    case 0:
-      return 'A'
-    case 1:
-      return 'B'
-    case 2:
-      return 'C'
-    case 3:
-      return 'D'
-    case 4:
-      return 'E'
-    case 5:
-      return 'F'
-    case 6:
-      return 'G'
-    case 7:
-      return 'H'
-    case 8:
-      return 'I'
-    case 9:
-      return 'J'
-    case 10:
-      return 'K'
-    case 11:
-      return 'L'
-    case 12:
-      return 'M'
+const A_Z = (function() {
+  const result = []
+  for (let i = 0; i < 26; i++) {
+    result.push(String.fromCharCode(65 + i))
   }
+  return result
+})()
+var getLetter = val => {
+  console.log(val)
+  return A_Z[val]
 }
 
 export default {