feat: 🎨 add placeholders

Author: shengyuan

index.html

@@ -441,27 +441,27 @@ <h3>怪獸廣播訊息</h3>
         <h3>按鈕廣播訊息</h3>
         <table>
           <tr>
-            <th><input class="btn-name" m="btn0n"></th>
+            <th><input class="btn-name" m="btn0n" placeholder="按鈕 1"></th>
             <td><input class="btn-msg" m="btn0"></td>
           </tr>
           <tr>
-            <th><input class="btn-name" m="btn1n"></th>
+            <th><input class="btn-name" m="btn1n" placeholder="按鈕 2"></th>
             <td><input class="btn-msg" m="btn1"></td>
           </tr>
           <tr>
-            <th><input class="btn-name" m="btn2n"></th>
+            <th><input class="btn-name" m="btn2n" placeholder="按鈕 3"></th>
             <td><input class="btn-msg" m="btn2"></td>
           </tr>
           <tr>
-            <th><input class="btn-name" m="btn3n"></th>
+            <th><input class="btn-name" m="btn3n" placeholder="按鈕 4"></th>
             <td><input class="btn-msg" m="btn3"></td>
           </tr>
           <tr>
-            <th><input class="btn-name" m="btn4n"></th>
+            <th><input class="btn-name" m="btn4n" placeholder="按鈕 5"></th>
             <td><input class="btn-msg" m="btn4"></td>
           </tr>
           <tr>
-            <th><input class="btn-name" m="btn5n"></th>
+            <th><input class="btn-name" m="btn5n" placeholder="按鈕 6"></th>
             <td><input class="btn-msg" m="btn5"></td>
           </tr>
           <tr>
@@ -477,7 +477,7 @@ <h3>按鈕廣播訊息</h3>
             <td><input class="btn-msg" m="btn8"></td>
           </tr>
           <tr>
-            <th><input class="btn-name" m="btn9n" placeholder="按鈕 910"></th>
+            <th><input class="btn-name" m="btn9n" placeholder="按鈕 10"></th>
             <td><input class="btn-msg" m="btn9"></td>
           </tr>
         </table>