不为Textarea元素提供支持。***对Taginput使用Input元素。

Support is not provided for the Textarea element. It is better to use the Input element for the Taginputs.

请参阅此处以供参考：
https://github.com/TimSchlechter/bootstrap-tagsinput/issues/38

See here for reference: https://github.com/TimSchlechter/bootstrap-tagsinput/issues/38