use extra params in store dynamically

Question

I have a form. In the form, I am using a comboBox with a store.

{
    xtype: \'combobox\',
    id: \'SubContractor\',
    name: \'SubCo         


        

Answer 1

In Chrome and FF even this will work:

store.proxy.extraParams.foo= 'bar';

But in IE8 (had this problem personally) got to do it the way mentioned by Evan

store.proxy.extraParams = {foo: 'bar'};

Check this...