angularJs自定义过滤器实现手机号信息隐藏的方法

<div ng-app="module" ng-controller="ctrl"> <table border="1" width="600">  <tr>   <td>编号</td>   <td>姓名</td>   <td>手机号</td>  </tr>  <tr ng-repeat="(k,v) in data">   <td>{{v.id}}</td>   <td>{{v.name}}</td>   <td>{{v.mobile|truncate:4}}</td>  </tr> </table></div><script> var m = angular.module('module', []);/*自定义过滤器truncate*/ m.filter('truncate',function(){  return function(mobile,len){   len = len?len:3;   return mobile.substr(0,11-len)+new String('*').repeat(len);  } }); m.controller('ctrl', ['$scope', '$filter', function ($scope, $filter) {  $scope.data = [   {id: 1, name: '张三', mobile: '14567654445'},   {id: 2, name: '李四', mobile: '13910959565'},   {id: 3, name: '王五', mobile: '13232343425'},  ]; }]);</script>