Angular.js：使用ng-class和click函數更改類

Question

我的控制器上有這個對象數組（self.years）

    var self = this;

    self.years =[
        {"year":"2010"},
        {"year":"2011"},
        {"year":"2012"},
        {"year":"2013"},
        {"year":"2014"},
        {"year":"2015"}
    ];

在我的標記中，我使用ng-repeat來為每個對象創建一個按鈕：

         <div class="btn-container col-md-2" ng-repeat="year in ctrl.years">
            <button class='btn year-btn' year="{{$index}}" ng-click="ctrl.updateYear($index)">{{year.year}}</button>
         </div>

如果在我的控制器上我已經有一個yearSelected，並且每個按鈕都有一個單擊功能來更改yearSelected：

self.yearSelected = self.years[5];

self.updateYear = function(indexSelected) {
    self.yearSelected = self.years[indexSelected];
};

...我如何使用ng-class將該對應的按鈕賦予yearSelected類？

Answer 1

self.updateYear = function(indexSelected) {
    self.currentIndex = indexSelected; // add this
    self.yearSelected = self.years[indexSelected];
};

在用戶界面上，將ng-class =“ {'active'：$ index === currentIndex}”添加到按鈕

Answer 2

self.yearSelected = self.years[0];

self.updateYear = function(year) {
    self.yearSelected = year;
};


<div class="btn-container col-md-2" ng-repeat="obj in ctrl.years">
    <button class='btn year-btn' ng-click="ctrl.updateYear(obj)">{{obj.year}}</button>
</div>

//use ng-class="{active: self.yearSelected === obj.year }"