Google FastButtons as knockout.js custom binding

app.js

ko.applyBindings({
	fastClickResult: ko.observable("Waiting..."),
	clickResult: ko.observable("Waiting..."),
	handleClick: function(self, event) {
		self.clickResult("Clicked!");
	},
	handleFastClick: function(self, event) {
		self.fastClickResult("Fast Clicked!");
	}
});

ko.fastclick.js

ko.bindingHandlers.fastClick = {
	init: function(element, valueAccessor, allBindingsAccessor, viewModel) {
		new FastButton(element, function() {
			valueAccessor()(viewModel, event);
		});
	}
};

markup.html

<button class="btn" data-bind="click: handleClick">click</button>

<button class="btn" data-bind="fastClick: handleFastClick">fastClick</button>