shim-selected-options

Tiny HTMLSelectElement#selectedOptions shim for IE.

* Can I use selectedOptions?
* WHATWG: HTML spec
* More conformant shim with IE8 support

Up and running

Get the package from npm:

``sh
npm install shim-selected-options --save
`

And simply require the module:

`js
import "shim-selected-options"
`

Otherwise, plug it the old-fashioned way:

`html

`

Caveats

While making spec-perfect shim is technically possible,
it requires observing DOM subtrees to implement quirks of HTMLCollection,
not to mention emulating live collection. For most cases, this solution is fine.

* New object instead of always the same
* NodeList instead of HTMLCollection instance
* Static collection instead of live

See more on collections in WHATWG DOM spec.

Examples

Straightforward for single-value selects:

`diff
- let {text} = select.options[select.selectedIndex]
+ let [{text}] = select.selectedOptions
`

Precise typing for multiple selects:

`diff
- let opts = select.querySelectorAll(":checked") // NodeList
+ let opts = select.selectedOptions // HTMLCollection
``