# Tag service

Manages tags in Content Services.

## Methods

`getTagsByNodeId(nodeId: string): any`<br/>
Gets a list of tags added to a node.

`getAllTheTags()`<br/>
Gets a list of all the tags already defined in the repository.

`addTag(nodeId: string, tagName: string): any`<br/>
Adds a tag to a node.

`removeTag(nodeId: string, tag: string): any`<br/>
Removes a tag from a node.

## Details

Content Services supports
[tagging](http://docs.alfresco.com/5.2/tasks/site-content-tag.html)
of file and folder nodes to assist with searches. A tag is a short
text string added to an item, rather like a hashtag in social media.

Usually, it is wise to let the user see a list of existing tags and let
them choose one by clicking. If they type a tag name with incorrect spelling
then it will be treated as a new tag, even though that was not intended.
Use `getAllTheTags` to find all tags in the repository when you need to
construct a list like this.

See the
[Tags API](https://github.com/Alfresco/alfresco-js-api/blob/master/src/alfresco-core-rest-api/docs/TagsApi.md)
in the Alfresco JS API for more information about the types returned by Tag
service methods and for the implementation of the REST API the service is
based on.

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## See also

- [Tag list component](tag-list.component.md)
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