Add symbols category

index.html

@@ -138,6 +138,9 @@ up a letter faster.
   <br>
   <input type="radio" id="difficultyVeryHard" name="difficulty" value="really-hard">
   <label for="difficultyVeryHard">Very Hard (multiple words)</label>
+  <br>
+  <input type="radio" id="difficultySymbols" name="difficulty" value="symbols">
+  <label for="difficultySymbols">(symbols)</label>
 </div>
 <br>
 <br>

morse-code_files/constants.js

@@ -51,6 +51,15 @@ const REVERSE_MORSE_MAP = function() {
   return reversed;
 }();
 
+const SYMBOLS = [
+    '.',
+    '?',
+    '!',
+    '=',
+    '+',
+    '-'
+  ];
+
 const COMMON_WORDS = {
   "description": "Common English words.",
   "commonWords":

morse-code_files/morse-code.js

@@ -125,6 +125,11 @@ function convertAsciiSentenceToMorse(asciiSentence) {
   return splitSentence.map(convertAsciiWordToMorse);
 }
 
+function getRandomSymbol() {
+  const randomIndex = Math.floor(Math.random() * SYMBOLS.length);
+  return SYMBOLS[randomIndex];
+}
+
 function getRandomLetter() {
   const randomIndex = Math.floor(Math.random() * 26);
   return Object.keys(MORSE_MAP)[randomIndex];
@@ -231,6 +236,10 @@ function getTarget() {
     case 'morse-hard':
       target = getRandomMorseWords();
       break;
+    case 'symbols':
+      target = getRandomSymbol();
+      console.log(target);
+      break;
     default:
       target = getRandomWords();
       break;