jquery如何获取CKEDITOR多个富文本框的值

百度中看到一些使用getDate()方法，但是CONSOLE一直报undefind

自己看API：http://docs.ckeditor.com/#!/api/CKEDITOR-property-instances

Stores references to all editor instances created. The name of the properties in this object correspond to instance names, and their values contain the CKEDITOR.editor object representing them.

 alert( CKEDITOR.instances.editor1.name ); // 'editor1'

getDate是js日期对象Date的，ckeditor没有这个方法