ng-options 是 AngularJS 中快速產生 option 的方法，而且 ng-options 使用上非常靈活，因此在不同狀況下使用方法都會有所差異
資料物件
4 | side_dish: 'Corn Soup', |
16 | side_dish: 'Black Tea', |
1.label for value in array
基本下拉選單
2 | <select ng-model="selectLunch" ng-options="lunch.name for lunch in lunches"> |
3 | <option value="">請選擇</option> |
自訂下拉選單
1 | <select ng-model="selectLunch" ng-options="(lunch.name + ' (' + lunch.side_dish + ')') for lunch in lunches"> |
2 | <option value="">請選擇</option> |
自訂 value
1 | <select ng-model="selectLunch" ng-options="lunch.name for lunch in lunches track by lunch.price"> |
2 | <option value="">請選擇</option> |
2.label group by group for value in array
加入 optgroup 分類
2 | <select ng-model="selectLunch" ng-options="lunch.name group by lunch.category for lunch in lunches track by lunch.price"> |
3 | <option value="">請選擇</option> |