[AngularJS] adding key board navigation on third party multi select drop down plugin

I have a multi select drop down , in that loading around 1900 domain list , that drop is multi select and searchable , after the search the if that item is not available i can add that "item" to list . my above requirement is done in this third party library here is the link

[AngularJS] get user data from angular material Treeview, compare with service data on tab change

I wrote a script to call mat-dialog to allow user to quit without saving onMatTabChange event.. It is a permissions & roles screen. Just concerned with objects(workflow & reports) data. I have the _objectsData variable with the backend data. I need to get the current input from user in the

[AngularJS] Providing Services

I just finished my first module, now I am working in my second module and realize I am gonna need a service from the first module, I was wondering if I can Provide it in the @NgModule({providers}) list of the second module, I am afraid angular creates two instances of the service if I provide