复制学期多次点击“完成”会复制多个学期

app/views/courses/_copy_course.html.erb

@@ -1,4 +1,11 @@
 <script type="text/javascript">
+    function submit_copy_course() {
+        if(regex_course_name()&&regex_course_class_period()&&regex_time_term()&&regex_course_password())
+        {
+            $("#new_course").submit();
+            document.getElementById("submit_copy_course").onclick = "";
+        }
+    }
     $(document).ready(function(){
         $("#time").change(function(){
             document.getElementById("end_time").options[document.getElementById("time").selectedIndex].selected = true;
@@ -147,7 +154,7 @@
   <% end %>
 </ul>
 <div>
- <a href="javascript:void(0);" class="greyBtn fr mr40 f12" onclick="submit_new_course();">完成</a>
+ <a href="javascript:void(0);" class="greyBtn fr mr40 f12" id="submit_copy_course" onclick="submit_copy_course();">完成</a>
  <a href="javascript:void(0);" class="greyBtn fr mr10 f12" onclick="hideResource();">取消</a>
 </div>
 <div class="cl"></div>