diff --git a/lib/jsdom/living/nodes/HTMLSelectElement-impl.js b/lib/jsdom/living/nodes/HTMLSelectElement-impl.js
index c53251179f..4871061169 100644
--- a/lib/jsdom/living/nodes/HTMLSelectElement-impl.js
+++ b/lib/jsdom/living/nodes/HTMLSelectElement-impl.js
@@ -90,6 +90,12 @@ class HTMLSelectElementImpl extends HTMLElementImpl {
return this.options.length;
}
+ get selectedOptions() {
+ return createHTMLCollection(this, () => domSymbolTree.treeToArray(this, { filter(node) {
+ return node._localName === "option" && node._selectedness === true;
+ } }));
+ }
+
get selectedIndex() {
return Array.prototype.reduceRight.call(this.options, (prev, option, i) => {
option = idlUtils.implForWrapper(option);
diff --git a/lib/jsdom/living/nodes/HTMLSelectElement.idl b/lib/jsdom/living/nodes/HTMLSelectElement.idl
index 4556875974..39a4f01b6e 100644
--- a/lib/jsdom/living/nodes/HTMLSelectElement.idl
+++ b/lib/jsdom/living/nodes/HTMLSelectElement.idl
@@ -19,7 +19,7 @@ interface HTMLSelectElement : HTMLElement {
void remove(long index);
// setter void (unsigned long index, HTMLOptionElement? option);
-// [SameObject] readonly attribute HTMLCollection selectedOptions;
+ [SameObject] readonly attribute HTMLCollection selectedOptions;
attribute long selectedIndex;
attribute DOMString value;
diff --git a/package.json b/package.json
index 5dba1666f8..9dca0207be 100644
--- a/package.json
+++ b/package.json
@@ -66,7 +66,7 @@
"st": "^1.2.0",
"watchify": "^3.9.0",
"wd": "^1.1.3",
- "webidl2js": "^6.0.3"
+ "webidl2js": "^6.1.0"
},
"browser": {
"canvas": false,
diff --git a/test/web-platform-tests/to-upstream.js b/test/web-platform-tests/to-upstream.js
index e775820a00..0732fabaca 100644
--- a/test/web-platform-tests/to-upstream.js
+++ b/test/web-platform-tests/to-upstream.js
@@ -89,6 +89,7 @@ describe("Local tests in Web Platform Test format (to-upstream)", () => {
"html/semantics/forms/the-option-element/option-index.html",
"html/semantics/forms/the-option-element/option-element-constructor.html",
"html/semantics/forms/the-select-element/select-multiple.html",
+ "html/semantics/forms/the-select-element/select-selectedOptions.html",
"html/semantics/forms/the-textarea-element/select.html",
"html/semantics/forms/the-textarea-element/set-value-reset-selection.html",
"html/semantics/forms/the-textarea-element/setRangeText.html",
diff --git a/test/web-platform-tests/to-upstream/html/semantics/forms/the-select-element/select-selectedOptions.html b/test/web-platform-tests/to-upstream/html/semantics/forms/the-select-element/select-selectedOptions.html
new file mode 100644
index 0000000000..f8e577a8a0
--- /dev/null
+++ b/test/web-platform-tests/to-upstream/html/semantics/forms/the-select-element/select-selectedOptions.html
@@ -0,0 +1,127 @@
+
+
+
+
+HTMLSelectElement.selectedOptions
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+