ng-repeat设置第一个元素为默认样式，点击其余元素切换样式

如何在ng-repeat时默认第一个元素background-color为红色，点击对应元素背景变红同时更换其他全为黑色

提供一个简单思路：

JS:

$scope.isActive = 0;
$scope.arr = [
{
//code here
},
{
//code here
}
];
$scope.selectItem = function (index) {
item.isActive = index;
}

HTML:

<ul>
<li ng-repeat="item in arr track by $index" ng-class="{red:isActive === $index, black:!isActive === $index}" ng-click="selectItem($index)"></li>
</ul>

CSS:

.red {
background: red;
}
.black {
background: black;
}

修改你的代码就是这样：

HTML:

<div class="p10 c-white w50p fl mr1 tc" ng-repeat="e in item.images">
<div class="w50p h50 img_div" ng-class="{b-red:isActive === $index,b-white:!isActive === $index}" ng-click="changeGood($index)">
<img src="{{e.path}}">
</div>
<span class="ib w50p fs0-6 span-over">{{e.description}}</span>
</div>

controller:

$scope.isActive=0;

$scope.changeGood=function(index){
$scope.isActive=index;

}

原文转载自：https://segmentfault.com/q/1010000006132084/a-1020000006132455