Sort an Array Based on User Input

Click the table headers to modify the sort order.

Name	Country
Jani	Norway
Carl	Sweden
Margareth	England
Hege	Norway
Joe	Denmark
Gustav	Sweden
Birgit	Denmark
Mary	England
Kai	Norway

By including the ng-click directive on the table headers, we can execute a function that alters the sorting order of the array.

Example

<div ng-app=”myApp” ng-controller=”namesCtrl”>

<table border=”1″ width=”100%”>
  <tr>
    <th ng-click=”orderByMe(‘name’)”>Name</th>
    <th ng-click=”orderByMe(‘country’)”>Country</th>
  </tr>
  <tr ng-repeat=”x in names | orderBy:myOrderBy”>
    <td>{{x.name}}</td>
    <td>{{x.country}}</td>
  </tr>
</table>

</div>

<script>
angular.module(‘myApp’, []).controller(‘namesCtrl’, function($scope) {
$scope.names = [
    {name:‘Jani’,country:‘Norway’},
    {name:‘Carl’,country:‘Sweden’},
    {name:‘Margareth’,country:‘England’},
    {name:‘Hege’,country:‘Norway’},
    {name:‘Joe’,country:‘Denmark’},
    {name:‘Gustav’,country:‘Sweden’},
    {name:‘Birgit’,country:‘Denmark’},
    {name:‘Mary’,country:‘England’},
    {name:‘Kai’,country:‘Norway’}
  ];
$scope.orderByMe = function(x) {
    $scope.myOrderBy = x;
}
});
</script>

Custom Filters

You can create custom filters by registering a new filter factory function with your module.

Example

Create a custom filter named “myFormat.”

<ul ng-app=”myApp” ng-controller=”namesCtrl”>
<li ng-repeat=”x in names”>
{{x | myFormat}}
</li>
</ul>
<script>

var app = angular.module(‘myApp’, []);
app.filter(‘myFormat‘, function() {
  return function(x) {
    var i, c, txt = “”;
    for (i = 0; i < x.length; i++) {
      c = x[i];
      if (i % 2 == 0) {
        c = c.toUpperCase();
      }
      txt += c;
    }
    return txt;
  };
});
app.controller(‘namesCtrl’, function($scope) {
  $scope.names = [‘Jani’, ‘Carl’, ‘Margareth’, ‘Hege’, ‘Joe’, ‘Gustav’, ‘Birgit’, ‘Mary’, ‘Kai’];
});

</script>

The myFormat filter will convert every other character to uppercase.