问题
<ul>
<li data-ng-repeat="image in images" data-ng-click="toggle = !toggle" data-ng-init="toggle=false">
<img data-ng-class="{'active' : toggle}" src="" />
</li>
</ul>
CSS for 'active' class is from bootstrap.
So toggling works, which is almost where I want it; I would like it similar to active states in navigation links, except in my example it's dealing with images so need to worry about url strings, etc.
I tried emulating this example found here to no avail (I tried the same logic for images): ng-class to highlight active menu item based on ng-repeat. AngularJS
If someone could point me in the right direction, I would greatly appreciate it. :D
回答1:
What i would do in your situation is define an object inside the parent scope of that ng-repeat, and assign the index or whatever you wish to a propperty of that object. That is because objects work by reference in javascript, which means that the ng-click will actually update the parent scope attribute instead of redefine it. Example at plnkr: http://plnkr.co/edit/oA12yLIb3RnlSYe6JxhI?p=preview
<!DOCTYPE html>
<html ng-app>
<head>
<style>
.active{
background-color: red;
height: 500px;
width: 500px;
}
</style>
</head>
<body ng-controller="HolaCtrl">
<ul>
<li data-ng-repeat="image in images" data-ng-click="toggleObject.item = $index">a
<img data-ng-class="{'active' : toggleObject.item == $index}" src="" /><br>
</li>
</ul>
<script>
function HolaCtrl($scope){
$scope.images = [1,2,3];
$scope.toggleObject = {item: -1};
}
</script>
</body>
</html>
Cheers
回答2:
You can try it in following way:
<body>
<style>
.blue{
background:blue;
}
</style>
<div ng-app='my'>
<div ng-controller='maincontroller as mainctrl'>
<div ng-repeat='item in mainctrl.arr'>
<p ng-class='{"blue":mainctrl.bgcolor==item}'
ng-click='mainctrl.addColor(item)'>
item {{item}}
</p>
</div>
</div>
</div>
<script>
var app = angular.module('my',[])
app.controller('maincontroller',maincontroller)
function maincontroller(){
var mainctrl = this;
mainctrl.arr = [1,2,3,4,5,6];
mainctrl.addColor = function(data){
mainctrl.bgcolor = data
}
}
</script>
</body>
来源:https://stackoverflow.com/questions/25559549/how-do-you-toggle-an-active-state-ng-class-in-an-ng-repeat-item-using-ng-click