How to clear dialog/xmlfragment content after close?

Question

My dialog is defined as document:

  onOpenDialog : function () {
     var oView = this.getView();
     var oDialog = oView.byId(\"helloDialog\");
     // create         


        

Answer 1

/***********************************/
onOpenAddEmployeeDialog: function () {
    var oView = self.getView()
    var oDialog = oView.byId('addEmployeeFragment');

    if ((oDialog = !null)) {
       var oDialog = sap.ui.xmlfragment(oView.getId(), 'sap.ui.view.AddEmployeeFragment'
       oView.addDependent(oDialog);
    }

    var dialogModel = new JSONModel();
    oDialog.setModel(dialogModel, 'dialog');
    oDialog.open();

},
/***********************************/           


/***********************************/
 dialogAfterClose: function () {
    var oView = self.getView()
    var oDialog = oView.byId('addEmployeeFragment');

    //clear dialog Data
    var oDialogData = oDialog.getModel('dialog').getData();
    Object.getOwnPropertyNames(oDialogData).forEach(function(d) {
         oDialogData[d] = 
     });

   dialogModel.setData(oDialogData);
   oDialog.close();
   oDialog.destroy();
},
/***********************************/

*AddEmployee.fragment.xml