这很清楚
<div ng-repeat="a in [1,1,1]">...</div>
由于上面的数组中存在重复值,因此肯定会抛出Dups错误.
对象列表怎么样？
<div ng-repeat="a in items">...</div>
JS
$scope.items = [
{"ab":1,"bc":3},{"ab":1,"bc":3}
]
角度如何处理/比较第二个以确定是否存在重复值？
谢谢.
编辑
为什么我没有出现重复错误？
解决方法
在您的情况下,因为您的两个对象具有相同的键值(ab),您将收到错误.通过$index添加曲目可能会解决问题.
编辑
从源代码.
variable in expression track by tracking_expression` – You can also provide an optional tracking function
* which can be used to associate the objects in the collection with the DOM elements. If no tracking function
* is specified the ng-repeat associates elements by identity in the collection. It is an error to have
* more than one tracking function to resolve to the same key. (This would mean that two distinct objects are
* mapped to the same DOM element,which is not possible.) Filters should be applied to the expression,
* before specifying a tracking expression.
据我了解,重复中的两个元素解析为相同的跟踪id(我相信$$hashkey)你会得到错误.你应该看看他们的源代码.它的评论和注释都很好.
