@function can-ssr.helpers.asset asset @parent can-ssr.helpers A can.stache [helper](http://canjs.com/docs/can.stache.Helpers.html) that is used to add a type of asset to the page. @signature `{{asset type}}` Add the **type** of asset to the page. @param {String} type a type of asset such as **css**. @return {DocumentFragment} A fragment appended to the page in the location of the helper. @body # Use Plugins can implement the [asset.register] interface to provide types of assets that might need to be added to the page. For example the [done-css](https://github.com/donejs/css) plugin registers itself as a handler for css assets. This allows you to do: ```html \{{asset "css"}} ``` which will generate: ```html ``` in development and in production: ```html ```