angularjs ng-options dictionary filter not empty -

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<select ng-model="new_key" ng-change="evaluate($parent.$index, k, new_key)" ng-options="key key+'('+value+')' (key, value) in vars">

vars has 3 keys. 1 value undefined. how create select valid values?

enter image description here

you can try add below filter in controller

$scope.removenull = function(itm) {  if(itm.value)return itm; else return; };

and add filter in ng-options 

ng-options="key key+'('+value+')' (key, value) in vars | filter : removenull"

remove null

hope you.


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