How to change the data at one combobox when the value of another combobox change ?

[mogu]

guys, I need help here....

Imagine this:

I have a combobox A dan combobox B. if I select a value on combobox A, then combobox B is automatically update its data depends on the selected value on combobox A.

Do anyony know how to make this happen ?

thanks..

[para]

search the forum. There have been many, many posts about this.

comboA.on('select', function() {r
  //change comboB's values
  // comboB.store
});

[mogu]

search the forum. There have been many, many posts about this.

comboA.on('select', function() {r
  //change comboB's values
  // comboB.store
});

I've search the forum but I still can't find the answer yet... Can anyone explain to me again ?
thanks..