# How to chain metaInfo which are depending on each other
Since v2.1 you can add a callback attribute to your metaInfo properties which you can use to chain loading.
If you e.g. need to load an external script before you can implement functionality based on that external script, you can use the callback and skip attributes to implement chaining of those scripts. See the API entry of the callback attribute for an example
The callback / onload event is supported on
script metaInfo properties