Angular arrays in the ng-repeat array

Define an array first

1. Anular code: var app = Angular.module (' Serapp ', []) App.controller (' Indexctrl ', function ($scope, $http) {$scope. Arrs = [{

N: ' a '; arr:[' 1 ', ' 2 ', ' 1 ']},{

N: ' b '; arr:[' 4 ', ' 5 ', ' 6 ']};})

1. HTML code:

<div ng-controller= "Indexctrl" >
<p>{{name}}</p>
<ul>
<li ng-repeat= "name in Names" >{{NAME.N}}
<p ng-repeat= "A in Name.arr track by $index" Id= "{{$index}}" >{{a}}</p>
</li>
</ul>
</div>

Track by $index   Add this code when there are duplicate values or the browser will report the error: [Ngrepeat:dupes] and will not render to the page

Angular arrays in the ng-repeat array