课程问答区帖子的发送防止连续提交

app/views/boards/_course_new.html.erb

@@ -2,6 +2,7 @@
     <%= import_ke(enable_at: true, prettify: false, init_activity: false) %>
 <% end %>
 <script type="text/javascript">
+    var first_click = true;
     function nh_check_field(params){
         var result=true;
         if(!regexTopicSubject()) {
@@ -49,10 +50,12 @@
              contentmsg:params.contentmsg,
              textarea:params.textarea
              });
-            if(is_checked){
+            if(first_click && is_checked){
                 if(flag){
+                    first_click = false;
                     return true;
                 }else{
+                    first_click = false;
                     $(this)[0].submit();
                     return false;
                 }