Utilizing ng-repeat in the select tag to include an additional blank choice in AngularJS

Working with AngularJS, I am creating a listbox using the select element and ng-repeat. Everything seems to be functioning correctly, but I am encountering an issue where a blank item is displayed at the top of the listbox.

Here is the snippet of my HTML code:

<select size="6" ng-model="item" ng-options="s.name for s in itemlist"></select>
<button class="btn tt-btn-blue" ng-model="singleModel" ng-click="onLoadClicked(item.id)">Load</button>

When inspecting the listbox in Chrome's console, this output is shown:

<select size="6" ng-model="item" ng-options="s.name for s in itemlist" class="ng-pristine ng-valid">
<option value="?" selected="selected"></option>
<option value="0">Item 1</option>
<option value="1">Item 2</option>
<option value="2">Item 3</option>
<option value="3">Item 4</option>
<option value="4">Item 5</option>
<option value="5">Item 6</option>
</select>

I am seeking a solution to remove this first blank option inserted by ng-repeat. While setting the first actual option as selected could be a workaround, I prefer to have no default selection when the listbox is initially loaded.

Answer №1

If you come across

<option value="?" selected="selected"></option>
within the select tag, it indicates that your ng-model is assigned a value that does not exist in the ng-options. To avoid having an empty option, ensure that item has a value from your itemlist. One quick solution is to include the following code snippet in your controller:

$scope.item = $scope.itemlist[0];

By doing this, you will set an initial value for 'item', and angular will handle updates automatically.

Answer №2

To ensure that any option added automatically by Angular is hidden, the simplest method is to use the ng-if directive.

<select ng-options="option.id as option.description for option in Options">
    <option value="" ng-if="false"></option>
</select>

Answer №3

I have finally discovered the answer after an extensive research and development process. Please refer to the code provided below, it should resolve your issue.

Below is the HTML Code

<div class="col-xs-3" ng-controller="GetUserADDetails">
            <label>Region</label>
                <select id="DDLRegion" ng-model="selectedregion" class="form-control" ng-change="getBranched(selectedregion)">   
                                <option value="" >--Select Region--</option>                                 
                                <option ng-repeat="region in Regions" value="{{region.LookupID}}">{{region.LookupValue}}</option>
                  </select>
 </div>

Here is the Module Code

var app = angular.module("UserMasterModel", [])
        .controller("GetUserADDetails", function ($scope, $http,$log) {
         $http({
                method: 'GET',
                url: '/UserMaster/GetAllRegion'
            })
            .then(function (response) {
                $scope.Regions = response.data;                        
                //$log.info(response);
            });

});

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