bootstrap-fileinput上传完文件后，输入框还原

$("#upload").on("fileuploaded", function (event, data, previewId, index) {
           debugger
           debugger;
     $('#upload').fileinput('cancel');
   $('#upload').fileinput('clear');
  $('#upload').fileinput('enable');
  $('#upload').fileinput('cancel');

$('#upload').fileinput('clear').fileinput('refresh').fileinput('enable');
    });

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