转自:https://blog.csdn.net/jumtre/article/details/50802136
其他博文ng-class使用方法:https://blog.csdn.net/sinat_36146776/article/details/78340922
有三种方法:
1、通过$scope绑定(不推荐)
2、通过对象数组绑定
3、通过key/value键值对绑定
实现方法:
1、通过$scope绑定(不推荐):
- function ctrl($scope) {
- $scope.className = "selected";
- }
function ctrl($scope) { $scope.className = "selected"; }
- <div class="{{className}}"></div>
<div class="{{className}}"></div>
2、通过对象数组绑定:
- function ctrl($scope) {
- $scope.isSelected = true;
- }
function ctrl($scope) { $scope.isSelected = true; }
- <div ng-class="{true:'selected',false:'unselected'}[isSelected]"></div>
<div ng-class="{true:'selected',false:'unselected'}[isSelected]"></div>
当isSelected为true时,增加selected样式;当isSelected为false时,增加unselected样式。
3、通过key/value键值对绑定:
- function ctrl($scope) {
- $scope.isA = true;
- $scope.isB = false;
- $scope.isC = false;
- }
function ctrl($scope) { $scope.isA = true; $scope.isB = false; $scope.isC = false; }
- <div ng-class="{'A':isA,'B':isB,'C':isC}"></div>
<div ng-class="{'A':isA,'B':isB,'C':isC}"></div>
当isA为true时,增加A样式;当isB为true时,增加B样式;当isC为true时,增加C样式。
- <ion-list>
- <ion-item ng-repeat="project in projects" ng-click="selectProject(project, $index)" ng-class="{active: activeProject == project}">
- {{project.title}}
- </ion-item>
- </ion-list>
<ion-list> <ion-item ng-repeat="project in projects" ng-click="selectProject(project, $index)" ng-class="{active: activeProject == project}"> {{project.title}} </ion-item> </ion-list>根据projects循环创建ion-item,当activeProject为当前循环到的project时,增加active样式。
几点说明:
1、不推荐第一种方法,因为controller $scope应该只有数据和行为
2、ng-class是增加相关样式,可以和class同时使用