小编JSX*_*JSX的帖子

我按照msdn的说明通过JSOM获取WorkflowSubscriptionService.

使用SharePoint 2013 Workflow Services客户端对象模型:http: //msdn.microsoft.com/en-us/library/office/dn481315(v = office.15).aspx

var clientContext = SP.ClientContext.get_current();
var workflowServicesManager = SP.WorkflowServices.WorkflowServicesManager.newObject(clientContext, clientContext.get_web()); 
var workflowSubscriptionService = workflowServicesManager.getWorkflowSubscriptionService();

这三行总是抛出错误:TypeError:Object [object Object]没有方法'get_context'消息:"Object [object Object]没有方法'get_context'"stack:(...)get stack:function(){ [native code]} set stack:function(){[native code]} proto:Error

我找不到错误.这是一个已知的错误？