想不到更好的方式，ng-repeat 操作数组，必须搞一个数组出来

html

<p ng-app="app">
  <p ng-controller="MainCtrl">
     <p ng-repeat="item in arr track by $index">
          {{$index+1}}
     </p>
  </p>
</p>

js

angular.module('app', []).controller('MainCtrl', function($scope){
    $scope.a = 30;
    $scope.arr = new Array($scope.a);
});

https://jsfiddle.net/hjzheng/...