Knockoutjs (version 2.1.0): bind boolean value to select box

Answer 1

Here is an option that we explored for this one from this forum post:

ko.bindingHandlers.booleanValue = {
    init: function(element, valueAccessor, allBindingsAccessor) {
        var observable = valueAccessor(),
            interceptor = ko.computed({
                read: function() {
                    return observable().toString();
                },
                write: function(newValue) {
                    observable(newValue === "true");
                }                   
            });

        ko.applyBindingsToNode(element, { value: interceptor });
    }
};

So, we use a custom binding to inject a writeable computed observable between the UI and our view model. This is just an alternative to doing it directly in your view model.

Sample here: http://jsfiddle.net/rniemeyer/H4gpe/