One or two-way binding

by Jorge Bustos Pereda

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/knockout/3.4.0/knockout-min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.4/jquery.js"></script>
"value: customProperty()"
<input type="text" data-bind="value: customProperty()"/>
<br/><br/>
"value: customProperty"
<input type="text" data-bind="value: customProperty"/>
<br/><br/>
customProperty: <span data-bind="text: customProperty"/>

JavaScript

var vm = {
	customProperty: ko.observable(10)
};

ko.applyBindings(vm);