extjs - relationship between grid,store and delbutton -

i have simple example:

 model1.getbottomtoolbar().items.item('model1del'). on('click',function() { rec = model1.getselectionmodel().getselected() model1.store.remove(rec) }) 

it's work it's not readable :). want create delbutton object:

 delbuttonforgrid = ext.extend ( ext.button, {    onclick:     rec = grid.getselectionmodel().getselected()      grid.store.remove(rec)    .... }) 

it's possible ?

the code seems proper. use button new delbuttonforgrid () . , record variable isn't proper in grid.store.remove(recc), use "rec" instead of "recc"