javascript - How to clear an angular array -

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 $scope.itemarray = ['a', 'b', 'c'];

this clear array ui wont updated.

$scope.itemarray = [];

this works fine! why?

 $scope.itemarray.length = 0;

$scope.itemarray.length = 0; << correct. length read-write property.

$scope.itemarray = []; << creates new empty array. if have bindings old itemarray, may lost. (html binding ng-if="itemarray[0]" wont lost)


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