javascript - Change background image on hover with AngularJS -

i have scope of 's background images, can't figure out how make them change. tried several variants, none of them has passed. here's code:

<div ng-controller="maincontroller" class="main">     <div ng-repeat="land in lands" class="col-md-9" ng-style="{ 'background-image': 'url({{ land.cover }})'}">         <p>{{ land.name }}</p>     </div> </div> 

javascript:

app.controller('maincontroller', ['$scope', function($scope) {     $scope.lands = [         {             cover: 'img/norway.jpg',             cover1: 'img/norway1.jpg',             name: 'norway'         },         {             cover: 'img/sweden.jpg',             cover1: 'img/sweden1.jpg',             name: 'sweden'         },         {             cover: 'img/denmark.jpg',             name: 'danmark'         },         {             cover: 'img/iceland.jpg',             name: 'iceland',         },         {             cover: 'img/finland.jpg',             name: 'finland'         },         {             cover: 'img/estonia.jpg',             name: 'estonia'         }     ]; }]); 

you can't use interpolation tags in expression context. should be:

<div ng-controller="maincontroller" class="main">     <div ng-repeat="land in lands" class="col-md-9"           ng-init="coverimage = land.cover"           ng-mouseover="coverimage = land.cover"          ng-mouseout="coverimage = land.cover1"          ng-style="{ 'background-image': 'url(' + coverimage + ')' }">         <p>{{ land.name }}</p>     </div> </div>