angularjs hover

<ul class="pdl-15">
<li ng-repeat="order in vm.selectOrders" ng-class="{styleSwitch: hover}"><div class="width-90b float-left selectedOption">{{order.orderCode}}</div>
    <div class="width-10b float-left text-right" ng-mouseenter="hover = true" ng-mouseleave="hover = false"> <img src="/static/assets/img/close_ico.png" class="chooseDetail" ng-click="fn.removeSuppression(order)"></div></li>
</ul>

关键点:

ng-class="{styleSwitch: hover}"

ng-mouseenter="hover = true" 

ng-mouseleave="hover = false"