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                ng-class是AngularJS預設的一個指令,用于動態自定義dom元素的css class name,下面是其官網的api doc, AngularJS:ngClass ng-class在實際的應用場景中還是比較靈活的,而在AngularJS中一般有三種方式給元素的class屬性做一些門道,如下 **對象key/value處理** ~~~ <!-- lang: js --> function Ctr($scope) { } <div ng-class {'selected': isSelected, 'car': isCar}"></div> ~~~ 說明 當 isSelected = true 則增加selected class,當isCar=true,則增加car class。以此類推。 **字符串數組形式** ~~~ !-- lang: js --> function Ctr($scope) { $scope.isActive = true; } <div ng-class="{true: 'active', false: 'inactive'}[isActive]"></div> ~~~ 說明 其結果是2中組合,isActive表達式為true,則 active,負責inactive。 **scope變量綁定(不推薦使用)** ~~~ <!-- lang: js --> function ctr($scope){ $scope.test =“classname”; } <div class=”{{test}}”></div> ~~~ 說明 這種方式完全沒錯,是angular提供的一種改變class的方式,但是在controller涉及了classname在我看來是乎總是那么詭異,我希望的是controller是一個干凈的純javascript意義的object。
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