title: How can i declare global variable in the controller in extjs4.1?
body: <p>I face some problem i can not declare global variable in extjs 4.1 controller if any one can help me how can i declare it.I donot know how i declare it
  here is my code</p>
  
  <pre><code>Ext.define('Ext4Example.controller.poscontroller', {
      extend: 'Ext.app.Controller',    
      //models: ['Vat','Rebate','Customer','Product','Invoice','Item','Order','Paymethod'],
      stores: ['InvoiceIdFromSession','Vats','Rebates','Customers','Products','Invoices','Items','Paymethods'], //'Orders', ,'InvoiceIdFromSession','Products'  
      id : 'poscontroller',
      views   : ['stock.SaleWindow','stock.ItemForm2','stock.ItemsGrid','stock.CalculationForm'],
      refs: [{
          ref: 'itemForm',
          selector: 'form'
      }],
      init: function() {
          this.control({
              'itemsgrid': {
                  removeitem: this.removeUser
              },
              'salewindow button[action=resetAll]': {
                  click: this.resertform
              },            
              'salewindow button[action=saveOrder]' : {
                  click : this.onsaveOrder
              },
              'salewindow button[action=PDF]' : {
                  click : this. pdfreport
              }
          });
      },
  
      onsaveOrder : function(button){
              // i want declare this variable to global variable  
  
              var  itemform  = Ext.getCmp('itemform2');
              var  calculation_Form =Ext.getCmp('calculation-form');
              var ItemFrmdata = itemform.getForm().getValues(); 
              var calcFrmdata = calculation_Form.getForm().getValues();
  
  
  }
  </code></pre>