The disable binding causes the associated DOM element to be disabled only when the parameter value is true. This is useful with form elements like input, select, and textarea.
This is the mirror image of the enable binding. For more information, see documentation for the enable binding, because disable works in exactly the same way except that it negates whatever parameter you pass to it.
© Steven Sanderson, the Knockout.js team, and other contributors
Licensed under the MIT License.
http://knockoutjs.com/documentation/disable-binding.html