Selects a subset of items from array and returns it as a new array.
{{ filter_expression | filter : expression : comparator}}$filter('filter')(array, expression, comparator)| Param | Type | Details | 
|---|---|---|
| array | Array | The source array. | 
| expression | stringObjectfunction() | The predicate to be used for selecting items from
   Can be one of: 
 | 
| comparator | function(actual, expected)trueundefined | Comparator which is used in determining if the expected value (from the filter expression) and actual value (from the object in the array) should be considered a match. Can be one of: 
 | 
<div ng-init="friends = [{name:'John', phone:'555-1276'},
                         {name:'Mary', phone:'800-BIG-MARY'},
                         {name:'Mike', phone:'555-4321'},
                         {name:'Adam', phone:'555-5678'},
                         {name:'Julie', phone:'555-8765'},
                         {name:'Juliette', phone:'555-5678'}]"></div>
Search: <input ng-model="searchText">
<table id="searchTextResults">
  <tr><th>Name</th><th>Phone</th></tr>
  <tr ng-repeat="friend in friends | filter:searchText">
    <td>{{friend.name}}</td>
    <td>{{friend.phone}}</td>
  </tr>
</table>
<hr>
Any: <input ng-model="search.$"> <br>
Name only <input ng-model="search.name"><br>
Phone only <input ng-model="search.phone"><br>
Equality <input type="checkbox" ng-model="strict"><br>
<table id="searchObjResults">
  <tr><th>Name</th><th>Phone</th></tr>
  <tr ng-repeat="friendObj in friends | filter:search:strict">
    <td>{{friendObj.name}}</td>
    <td>{{friendObj.phone}}</td>
  </tr>
</table>var expectFriendNames = function(expectedNames, key) {
  element.all(by.repeater(key + ' in friends').column(key + '.name')).then(function(arr) {
    arr.forEach(function(wd, i) {
      expect(wd.getText()).toMatch(expectedNames[i]);
    });
  });
};
it('should search across all fields when filtering with a string', function() {
  var searchText = element(by.model('searchText'));
  searchText.clear();
  searchText.sendKeys('m');
  expectFriendNames(['Mary', 'Mike', 'Adam'], 'friend');
  searchText.clear();
  searchText.sendKeys('76');
  expectFriendNames(['John', 'Julie'], 'friend');
});
it('should search in specific fields when filtering with a predicate object', function() {
  var searchAny = element(by.model('search.$'));
  searchAny.clear();
  searchAny.sendKeys('i');
  expectFriendNames(['Mary', 'Mike', 'Julie', 'Juliette'], 'friendObj');
});
it('should use a equal comparison when comparator is true', function() {
  var searchName = element(by.model('search.name'));
  var strict = element(by.model('strict'));
  searchName.clear();
  searchName.sendKeys('Julie');
  strict.click();
  expectFriendNames(['Julie'], 'friendObj');
});