# wx.getBackgroundFetchData(object object)
Start from base library version 2.8.0. Please remaining backward compatible.
with Promise style call: Supported
Mini Program plugin: Not supported
Pull backgroundFetch Client cache data
# parameter
# object object
| attribute | type | Default values | Required | Introductions |
|---|---|---|---|---|
| fetchType | String | yes | Cache data category, with a value of periodic or pre | |
| success | function | no | Interface calls the successful callback function | |
| fail | function | no | Interface calls failed callback functions | |
| complete | function | no | Callback function at the end of an interface call (both successful and unsuccessful calls are executed) |