my.onError - Mobile Platform as a Service - Alibaba Cloud Documentation Center

Description

my.onError

Listen for mini program error event. Currently, only JS execution errors are supported. The trigger timing and parameters are the same as app.js registering Mini Program.

Input parameter

Function listener

Parameter

Property	Type	Compatibility	Description
error	String	-	The description of the exception, which is generally the `message` field of the `Error` object.
stack	String	Base database: 2.7.4	The exception stack, which is generally 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, onError methods in the app.js will also listen for errors.
Usemy.onError to listen for page errors. If listener is enabled on multiple pages and not closed, multiple listen events will be triggered when the page reports error. Therefore, it is recommended to call my.offError to close the listener function when the page is closed.