knockout.js - Knockout and jQuery Mobile: Checkboxes

Question

I'm trying to dynamically add checkbox and label elements to the document. Checkbox element has Knockout's data-bind attribute to bind its value to an observable value in the ViewModel. However when I try to style the checkboxes with jQuery Mobile by executing

$('input[type="checkbox"]').checkboxradio();

data-bind attributes will be removed. If I leave out the above line, data-bind attributes are properly set and the binding works.

Is there a way to have both jQuery Mobile styling and Knockout bindings at the same time?

I'm using jQuery Mobile RC1 and Knockout 1.2.1.

Answer 1

I have also encountered this problem. Unfortunately, all the suggestions here either did not work for me or had other issues. So I have created a simple custom binding that works in all versions of KO (including the latest v3):

ko.bindingHandlers.jqmChecked = {
    init: ko.bindingHandlers.checked.init,
    update: function (element, valueAccessor) {
        //KO v3 and previous versions of KO handle this differently
        //KO v3 does not use 'update' for 'checked' binding
        if (ko.bindingHandlers.checked.update) 
            ko.bindingHandlers.checked.update.apply(this, arguments); //for KO < v3, delegate the call
        else 
            ko.utils.unwrapObservable(valueAccessor()); //for KO v3, force a subscription to get further updates

        if ($(element).data("mobile-checkboxradio")) //calling 'refresh' only if already enhanced by JQM
            $(element).checkboxradio('refresh');
    }
};

Should be used like this:

<input type="checkbox" data-bind="jqmChecked: someValue" id="checkbox1"/>

See a complete working example here:

http://jsfiddle.net/srgstm/ub6sq/