验证正确和错误之后，可以继续点击进行验证

app/views/homework_common/programing_test.js.erb

@@ -1,2 +1,2 @@
-$("#test_send_<%= @index%>").replaceWith("<span class='<%= @result == 0 ? 'green_btn' : 'red_btn'%> fl ml5 mt1'><%= @result == 0 ? '正确' : '错误'%></span>");
+$("#test_send_<%= @index%>").replaceWith("<a class='<%= @result == 0 ? 'green_btn' : 'red_btn'%> fl ml5 mt1' onclick='programing_test(<%= @index%>)' id='test_send_<%= @index%>'><%= @result == 0 ? '正确' : '错误'%></a>");
 $("#test_result_<%= @index%>").val("<%= @result%>");

public/stylesheets/public.css

@@ -170,9 +170,9 @@ a:hover.grey_btn{ background:#717171; color:#fff;}
 a.green_btn{background:#28be6c;color:#fff;font-size:14px; font-weight:normal; padding:2px 8px; text-align:center;cursor: pointer;}
 a:hover.green_btn{ background:#14ad5a;}
 .blue_btn{ background:#64bdd9; color:#fff; font-size:14px; font-weight:normal;padding:2px 8px; text-align:center;}
-a.blue_btn{background:#64bdd9;color:#fff;font-size:14px; font-weight:normal; padding:2px 8px; text-align:center;}
+a.blue_btn{background:#64bdd9;color:#fff;font-size:14px; font-weight:normal; padding:2px 8px; text-align:center;cursor: pointer;}
 .red_btn{ background:red; color:#fff; font-size:14px; font-weight:normal;padding:2px 8px; text-align:center;}
-a.red_btn{background:red; color:#fff;font-size:14px; font-weight:normal; padding:2px 8px; text-align:center;}
+a.red_btn{background:red; color:#fff;font-size:14px; font-weight:normal; padding:2px 8px; text-align:center;cursor: pointer;}
 a.orange_btn_homework{background:#d63502;color:#fff;font-size:14px; font-weight:normal; padding:2px 10px; text-align:center;}
 a:hover.blue_btn{ background:#329cbd;cursor: pointer;}
 a.orange_btn{  background:#ff5722;color:#fff;font-size:14px; font-weight:normal; padding:2px 10px; text-align:center; }