angularjs中设置单选按钮默认被选中

在需要默认选中的单选按钮上添加指令：ng-checked='true’就可以了

<input type="radio" ng-model="myVar" value="dogs" ng-checked="true">Dogs<input type="radio" ng-model="myVar" value="tuts">Tutorials<input type="radio" ng-model="myVar" value="cars">Cars