Angular - useful things to know

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knowSelected items in select controls Say you have a model which is an array of selected items for a select. Use ng-repeat to populate the select but how do you show which ones are selected?

See: https://peterski.wordpress.com/2014/05/19/angularjs-multiple-select-using-ng-repeat/

multiple ng-multiple="true" class="form-control">

ng-selected="isSelected(selectedItems, item.Id)"

value="{{item.Id}}">

{{item .title}}

Nested Scopes in Angular Do not use primitives as models in Angular, e.g. $scope.firstName = 'Joe' .

The problem is that if you say $childScope.name = 'Sarah' then Javascript will make the assignment but *will not* look further up the prototypal chain to see if the member already exists. *But* if the parent has a member: $scope.person = { firstName : 'James' }; . If you say $scope.person.firstName = 'Sarah' then Javascript will look up the prototypal chain for the person member and find it in the parent scope.

ng-switch You can use in the same way as a switch statement in Javascript with ng-when