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How can I add empty option in the beginning when I use ng-option to provide predefined list of options which doesn't include empty one?
An example in jade
select(ng-model="property.Value", ng-options="item.Value as item.Name for item in property.Choices") 
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The empty option is generated when a value referenced by ng-model doesn't exist in a set of options passed to ng-options . This happens to prevent accidental model selection: AngularJS can see that the initial model is either undefined or not in the set of options and don't want to decide model value on its own.
In AngularJS when you are using ng-options, you can filter out the options by calling a custom function you have in the controller. Let's say you have following set of employees and when you display all these employees inside HTML select using ng-options, you can see all the employees in a dropdown.
In my opinion the correct way to set a default value is to simply pre-fill your ng-model property with the value selected from your ng-options , angular does the rest. Essentially when you define the $scope property your select will bind to assign it the default value from your data array.
ng-options is the directive which is designed specifically to populate the items of a dropdown list. One major advantage using ng-options for the dropdown is, it allows us to pass the selected value to be an object. Whereas, using ng-repeat the selected value can only be string.
Just add an option with empty value inside of the select.
select(ng-model="property.Value", ng-options="item.Value as item.Name for item in property.Choices") option(value="") Here's an example - http://jsfiddle.net/sseletskyy/uky9m/1/
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