Add Options() to HTMLSelectElement.

[dmitshur]

I think it would be useful if HTMLSelectElement had Options() just like HTMLDataListElement does (which is where I copied the code from):

diff --git a/dom.go b/dom.go
index 78f3e2e..a2fa6e7 100644
--- a/dom.go
+++ b/dom.go
@@ -2401,6 +2401,15 @@ type HTMLScriptElement struct {

 type HTMLSelectElement struct{ *BasicHTMLElement }

+func (e *HTMLSelectElement) Options() []*HTMLOptionElement {
+   options := nodeListToElements(e.Get("options"))
+   out := make([]*HTMLOptionElement, len(options))
+   for i, option := range options {
+       out[i] = option.(*HTMLOptionElement)
+   }
+   return out
+}
+
 type HTMLSourceElement struct {
    *BasicHTMLElement
    Media string `js:"media"`

[dominikh]

You are right. HTMLSelectELement has generally not been implemented yet, which is why it doesn't have any fields or methods yet. I will add those soon.