[jQuery Mobile] 動態更改jquery mobile 按鈕的圖示

記錄一下如何動態變更jquery mobile 生成的按鈕Icon. http://stackoverflow.com/questions/12627864/change-data-icon-on-click-with-jquery-mobile

$(buttonSelector).attr('data-icon', newIcon)
                 .find('.ui-icon')
                     .addClass('ui-icon-' + newIcon)
                     .removeClass('ui-icon-' + oldIcon);