我想向我的OnSuccess回调添加更多参数(但保留ajax上下文变量)。我所做的是:using(Ajax.BeginForm("Register",newAjaxOptions(){OnSuccess="newfunction(arg){HandleBasicForm(arg,'MyCustomVariable')}",...JS函数:functionHandleBasicForm(ajaxContext,myCustomVariable){varcontent=ajaxContext.get_response().get_object();....}但是ajaxContext为空。