my.onError-Mobile Platform as a Service(mPaaS)-阿里云帮助中心

Description

my.onError

Listens for Mini Program error events. Currently, only JavaScript execution errors are supported. The trigger timing and parameters are the same as onError(error: String).

Input parameter

Function listener

Parameter

Attribute	Type	Compatibility	Description
error	String	-	Exception description, typically the `message` field of the `Error` object.
stack	String	Base library: 2.7.4	Exception stack trace, typically the `stack` field of the `Error` object.

Sample code

my.onError(Function listener)

Page({
 onLoad() {
 my.onError(this.errorHandler);
 },
 errorHandler(error, stack) {
 console.log('onError error', error);
 console.log('onError stack', stack);
 }
})

Note

If you use my.onError to listen for errors, the onError method in app.js also listens for errors.
When you use my.onError to listen for page errors and the listener is registered on multiple pages without being closed, multiple listen events are triggered when an error occurs. We recommend that you call my.offError to close the listener when the page is closed.