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I want to convert English to Chinese display in ng-option, but the filter seems to be invalid. I used uppercase but it didn't work either. Why?
I see a lot of things written like this on the Internet

The following is the code:
(1) The status list is defined in the controller:

$scope.allStatuses = ["all", "process", "resolve", "finish", "invalid"];

(2) Initialize the drop-down list in html, and want to use myStatusFilter this filter to format it for Chinese display

                    <select class="form-control"
                            style="margin-right: 20px;width: 180px;"
                            ng-model="status"
                            ng-options="status for status in allStatuses | myStatusFilter">
                    </select>

(3) filter implementation

angular.module("itil.mine")
        .filter('myStatusFilter', myStatusFilter);

    function myStatusFilter() {
        return function (input) {
            var output;
            switch (input) {
                case 'process':
                    output = "處理中";
                    break;
                case 'resolve':
                    output = "已解決為落實(shí)";
                    break;
                case 'finish':
                    output = "已解決已落實(shí)";
                    break;
                case 'invalid':
                    output = '無(wú)效';
                    break;
                case 'all':
                    output = "所有";
                    break;
            }
            return output;
        }
    }         "