1 files changed, 8 insertions, 4 deletions
diff --git a/components/script/dom/webidls/HTMLTextAreaElement.webidl b/components/script/dom/webidls/HTMLTextAreaElement.webidl
index 2e2e1288559..f0e8a0be118 100644
--- a/components/script/dom/webidls/HTMLTextAreaElement.webidl
+++ b/components/script/dom/webidls/HTMLTextAreaElement.webidl
@@ -51,11 +51,15 @@ interface HTMLTextAreaElement : HTMLElement {
   readonly attribute NodeList labels;
 
   // void select();
-           attribute unsigned long selectionStart;
-           attribute unsigned long selectionEnd;
-           attribute DOMString selectionDirection;
+  [SetterThrows]
+           attribute unsigned long? selectionStart;
+  [SetterThrows]
+           attribute unsigned long? selectionEnd;
+  [SetterThrows]
+           attribute DOMString? selectionDirection;
   // void setRangeText(DOMString replacement);
   // void setRangeText(DOMString replacement, unsigned long start, unsigned long end,
   //                   optional SelectionMode selectionMode = "preserve");
-  void setSelectionRange(unsigned long start, unsigned long end, optional DOMString direction);
+  [Throws]
+           void setSelectionRange(unsigned long start, unsigned long end, optional DOMString direction);
 };