In the provided code, we've created two elements. The first with the id "multiple-checkboxes" is used for selecting languages, while the second with the id "p-nhb" is for selecting programming ...

Firefox only (Win/Mac/Linux): Firefox extension CheckBoxMate allows you to check/uncheck multiple checkboxes by clicking and dragging with your mouse— ...

So actually we can track selection target only via native (click) event on mat-option and then check the target, but would be good to have it in MatSelectChange event. e.g. I want to close mat-select ...