javascript - Please give me some guidance. Angular's $event is undefined in select?

Question

Development environment:

• angular 1.6.1

• Chrome latest version

Development issues:

• I want to use $event to get the object of the event operation, but it is undefined in the select, which is very confusing.

• Due to the maintenance requirements of old projects, I have just come into contact with angular, but I have not had time to study it in depth. I hope that familiar friends can give me some guidance.

Development purpose:

• You need to get the event itself in angular's select, and then use .target to get the DOM of the operation.

• Why does undefined appear?

DEMO：

• In order to trace the source, I used angular and native js to obtain the event itself.

• CODEPEN DEMO

• Due to codepen’s limitations on console output, the picture below shows my implementation.

Screenshot description:

• angular

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• JavaScript

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Thank you very much for helping me check and answer. Thank you.

Answer 1

ng-change does not allow passing $event, because it is not an event in angular, but listens for changes in values, so there will be no $event.
Do you have any need to operate the dom?
About angular, please explain:
1. If you use angular, try not to directly operate the dom
2. If you really need to operate, it is best to operate with a directive

Answer 2

Answer here: https://stackoverflow.com/que...