我有一个 ng-repeat在另一个 ng-repeat .在第二个，当我想通过 $index和 $parent.$index到函数(使用 ng-click 或 tooltip )，我没有得到正确的索引。
为了让它工作，我需要使用 $parent.$index和 $parent.$parent.$index .
奇怪的是，我只需要为第二个 ng-repeat 执行此操作。此外，这些值似乎只有在 ng-click 内时才会出错。或 tooltip (如果我将它们显示在 ng-repeat 中，它们是正确的)
我做了一个plunker，所以你可以看到结果:
http://plnkr.co/edit/K6jWTffe8BqgLZhFIbHL?p=preview
<!DOCTYPE html>
<html>
<head>
<link data-require="bootstrap-css@~3.1.1" data-semver="3.1.1" rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" />
<script src="https://code.angularjs.org/1.3.0-beta.17/angular.js" data-semver="1.3.0-beta.17" data-require="angular.js@1.3.0-beta.17"></script>
<script data-require="ui-bootstrap@0.11.0" data-semver="0.11.0" src="http://angular-ui.github.io/bootstrap/ui-bootstrap-tpls-0.11.0.min.js"></script>
<link href="style.css" rel="stylesheet" />
<script>
var app = angular.module('myApp', ['ui.bootstrap']);
app.controller('MainCtrl', function($scope) {
$scope.data = [
{id: "1", text: "text 1", more: [
{id_more: "10", text_more: "text more 10"},
{id_more: "11", text_more: "text more 11"},
{id_more: "12", text_more: "text more 12"},
{id_more: "13", text_more: "text more 13"},
]},
{id: "2", text: "text 2", more: [
{id_more: "20", text_more: "text more 20"},
{id_more: "21", text_more: "text more 21"},
{id_more: "22", text_more: "text more 22"},
{id_more: "23", text_more: "text more 23"},
]},
{id: "3", text: "text 3", more: [
{id_more: "30", text_more: "text more 30"},
{id_more: "31", text_more: "text more 31"},
{id_more: "32", text_more: "text more 32"},
{id_more: "33", text_more: "text more 33"},
]},
];
$scope.func = function(index){
var result = index;
return result;
};
$scope.funcMore = function(index, indexMore){
var result = index + ' - ' + indexMore;
//The problem is when I want to do $scope.data[index].more[indexMore]
//Then it throws error because some of the index are undefined in the array
return result;
};
$scope.clickMore = function(index, indexMore){
alert(index + ' - ' + indexMore);
};
});
</script>
</head>
<body ng-app="myApp" ng-controller="MainCtrl" style="margin:20px">
<div ng-repeat="d in data" style="border:1px solid #ccc; margin-bottom:10px">
{{d.id}} - {{d.text}} - {{$index}} -
<span tooltip-placement="bottom" tooltip-html-unsafe="{{func($index)}}">Working</span>
<div ng-repeat="more in d.more" style="margin-left:20px">
{{more.id_more}} - <!-- ID -->
{{more.text_more}} - <!-- Text -->
({{$parent.$index}} - {{$index}}) <!-- Correct $parent.$index and $index -->
<span ng-click="clickMore($parent.$parent.$index, $parent.$index)" tooltip-placement="bottom" tooltip-html-unsafe="{{funcMore($parent.$parent.$index, $parent.$index)}}">Working</span> -
<span ng-click="clickMore($parent.$index, $index)" tooltip-placement="bottom" tooltip-html-unsafe="{{funcMore($parent.$index, $index)}}">Not Working</span>
</div>
</div>
</body>
</html>
最佳答案
看看documentation对于 ng-init 和 ng-repeat。
使用 ng-init，您可以为 $index 设置别名，这样您就不会遇到所看到的冲突。文档中的示例几乎正是您想要做的。
从文档:
<script>
angular.module('initExample', [])
.controller('ExampleController', ['$scope', function($scope) {
$scope.list = [['a', 'b'], ['c', 'd']];
}]);
</script>
<div ng-controller="ExampleController">
<div ng-repeat="innerList in list" ng-init="outerIndex = $index">
<div ng-repeat="value in innerList" ng-init="innerIndex = $index">
<span class="example-init">list[ {{outerIndex}} ][ {{innerIndex}} ] = {{value}};</span>
</div>
</div>
</div>
Here is a modified Plunk
关于AngularJS + ng-repeat : weird $index and $parent. $index 传入函数时的值，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/28682417/