javascript - Scroll event on ExtJS combobox picker -

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i want add handler scroll event on combobox's picker scroll, scroll event not fired.

    ext.define('test.mycombo', {         extend:'ext.form.field.combobox',         createpicker: function() {             var me = this,                 picker = me.callparent(arguments);             me.mon(picker, {                 'afterrender' : function() {                     picker.gettargetel().on('scroll', function(){                         console.log('scroll?');                     }, me);                 },                 scope: me             });             return picker;         },     });

you should listen on picker instead of targetel.

ext.define('test.mycombo', {         extend:'ext.form.field.combobox',         createpicker: function() {             var me = this,                 picker = me.callparent(arguments);               picker.on('scroll', function(){                  console.log('scroll?');              }              return picker;         },     });

here fiddle https://fiddle.sencha.com/#fiddle/17bb


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