# wx.onUnhandledRejection(function callback)

Start from base library version 2.10.0. Please remaining backward compatible.

with Promise style call: Not supported

Mini Program plugin: Not supported

Listening for unhandled Promise Reject event. This event is related to App.onUnhandledRejection The callback timing of the.

# parameter

# function callback

Untreated Promise A callback function that rejects events

# parameter

# Object res
attribute type Introductions
reason string The reason for rejection is usually one Error object
promise Promise.&ltany&gt Rejected Promise object

# Be careful

  • All of it. unhandledRejection Can be captured by this wiretap, but only Error Type will trigger an alarm in the background of the Mini Program.