Is Angular JS binding case-sensitive?

Currently, I have a dropdown menu displaying a list of countries from a JSON file. Beside it, there is a text field that correlates to the dropdown, showing the ISO 3166 alpha-2 data (e.g. CH for Switzerland).

Users have the option to input the 2-character code, and the corresponding country name will appear in the dropdown menu.

https://i.sstatic.net/t3FoY.jpg

However, a drawback is that users have to input the alpha-2 value in uppercase for it to match. For instance, typing "CH" will work, but "ch" will not yield any matches in the dropdown menu.

Is there a workaround for this issue?

  <td>
     <input type="text" size="4" ng-model="country_import.alpha_2">
  </td>
  <td>
     <select ng-model="country_import" ng-options="s.name for s in iso3166 track by s.alpha_2" class="form-control input-xs country-menu"></select>
  </td>

Answer №1

Simply apply the .toUpperCase() method to the track by variable

<select ng-model="country_import" ng-options="s.name for s in iso3166 track by s.alpha_2.toUpperCase()" class="form-control input-xs country-menu"></select>

Check out this plunker for a similar scenario: https://plnkr.co/edit/pESocfNey55uZb85RgDE?p=preview

Answer №2

To monitor that, I'd recommend setting up a watch and converting all user input to uppercase.

  $scope.$watch('country_import.alpha_2', function() {
        $scope.country_import.alpha_2 = $scope.country_import.alpha_2.toUpperCase();
  });

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