<form name="zipcode">

  <div class="form-inline">
    <h2>Numéro de votre département</h2>

    <input class="form-control" type="text"
           id="mdphinput" name="mdphinput"
           ng-model="mdphinputctrl.zipcode">

    <button class="btn btn-success" type="submit"
            name="submit" alt="Valider"
            ng-disabled="!mdphinputctrl.isOk()"
            ng-click="mdphinputctrl.go()">
      Valider
    </button>
  </div>

</form>

<form name="zipcode" ng-submit="mdphinputctrl.go()">

  <div class="form-inline">
    <label for="mdphinput">Numéro de votre département</label>

    <input class="form-control" type="text"
           id="mdphinput" name="mdphinput"
           ng-model="mdphinputctrl.zipcode">

    <input id="btn-login" class="btn btn-success"
           role="button" ng-disabled="!mdphinputctrl.isOk()"
           type="submit" value="Valider">
  </div>

</form>

Use ng-submit to stay consistent with the rest of the app
Use ng-submit to stay consistent with the rest of the app
