jquery mobile alter、confirm重写，使用popup

function confirmDialog(text, callback) {
var popupDialogId = 'popupDialog';
$('<div data-role="popup" id="' + popupDialogId + '" data-confirmed="no" data-transition="pop" data-overlay-theme="b" data-theme="b" data-dismissible="false" style="max-width:500px;"> \
                    <div data-role="header" data-theme="a">\
                        <h1>Question</h1>\
                    </div>\
                    <div role="main" class="ui-content">\
                        <h3 class="ui-title">' + text + '</h3>\
                        <a href="#" class="ui-btn ui-corner-all ui-shadow ui-btn-inline ui-btn-b optionConfirm" data-rel="back">Yes</a>\
                        <a href="#" class="ui-btn ui-corner-all ui-shadow ui-btn-inline ui-btn-b optionCancel" data-rel="back" data-transition="flow">No</a>\
                    </div>\
                </div>')
    .appendTo($.mobile.pageContainer);
var popupDialogObj = $('#' + popupDialogId);
popupDialogObj.trigger('create');
popupDialogObj.popup({
    afterclose: function (event, ui) {
        popupDialogObj.find(".optionConfirm").first().off('click');
        var isConfirmed = popupDialogObj.attr('data-confirmed') === 'yes' ? true : false;
        $(event.target).remove();
        if (isConfirmed && callback) {
            callback();
        }
    }
});
popupDialogObj.popup('open');
popupDialogObj.find(".optionConfirm").first().on('click', function () {
    popupDialogObj.attr('data-confirmed', 'yes');
});
}