code: function(){
          var me = this,
              inputEl = me.inputEl,
              onChangeTask,
              onChangeEvent,
              events = me.checkChangeEvents,
              e,
              eLen   = events.length,
              event;
  
          // standardise buffer across all browsers + OS-es for consistent event order.
          // (the 10ms buffer for Editors fixes a weird FF/Win editor issue when changing OS window focus)
          if (me.inEditor) {
              me.onBlur = Ext.Function.createBuffered(me.onBlur, 10);
          }
          if (inputEl) {
              me.mon(inputEl, Ext.EventManager.getKeyEvent(), me.fireKey,  me);
  
              // listen for immediate value changes
              onChangeTask = new Ext.util.DelayedTask(me.checkChange, me);
              me.onChangeEvent = onChangeEvent = function() {
                  onChangeTask.delay(me.checkChangeBuffer);
              };
  
              for (e = 0; e < eLen; e++) {
                  event = events[e];
  
                  if (event === 'propertychange') {
                      me.usesPropertychange = true;
                  }
  
                  me.mon(inputEl, event, onChangeEvent);
              }
          }
          me.callParent();
      }
docs: private