getJSON 不执行回调函数的问题
js: 
  function check(domain)
  {
  var otitle = null;
  var title = null;
   
  otitle = $("#txtchatquestion");
  title = otitle.val();
  title=title.replace(/[ ]/g,""); 
  if(title=="")
  {
  alert('请输入问题内容！');
  return ;
  }
  var url =
  "http://ashx."+domain+"/ChatAjax.ashx?time=" + Math.random() + "&callback=?";
  $.getJSON(
  url,
  {"type":"tijiao","tijiao_content":""+title+""},
  function(json){
  alert(json.msg);
  }
  );
  }

ashx:
 string callback = context.Request.QueryString["callback"];

  content = context.Request.QueryString["tijiao_content"].ToString();
  string sql = string.Empty;
  DBOracle ora = new DBOracle();
  sql = "insert into web_question(title,content) values('" + content + "','" + content + "')";
  int num = ora.ExecSql(sql);
  context.Response.ContentType = "text/plain";
  if (num > 0)
  {
  context.Response.Write(callback + "({\"msg\":\"添加成功！\"})");
  }
  else
  {
  context.Response.Write(callback + "({\"msg\":\"添加失败！\"})");
  }
  context.Response.End();

如上代码 总是不执行回调函数 各位大侠 帮忙看看 js报错 缺少' ; ' 分号 


补充一下：能将数据传入ashx 并成功插入数据库 就是不能将数据返回js页面 我用getJSON 是因为要跨域！

------解决方案--------------------
context.Response.ContentType = "application/json";
试试