3 An input with data binding.
5 By default you can only get notified of changes to an `input`'s `value` due to user input:
8 <input value="{{myValue::input}}">
11 `iron-input` adds the `bind-value` property that mirrors the `value` property, and can be used
12 for two-way data binding. `bind-value` will notify if it is changed either by user input or by script.
15 <input is="iron-input" bind-value="{{myValue}}">