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-rw-r--r--components/script/dom/webidls/CharacterData.webidl6
1 files changed, 3 insertions, 3 deletions
diff --git a/components/script/dom/webidls/CharacterData.webidl b/components/script/dom/webidls/CharacterData.webidl
index b22d755438f..79e6c933c98 100644
--- a/components/script/dom/webidls/CharacterData.webidl
+++ b/components/script/dom/webidls/CharacterData.webidl
@@ -11,9 +11,9 @@
*/
interface CharacterData : Node {
- [TreatNullAs=EmptyString] attribute DOMString data;
- readonly attribute unsigned long length;
- [Throws]
+ [Pure, TreatNullAs=EmptyString] attribute DOMString data;
+ [Pure] readonly attribute unsigned long length;
+ [Pure, Throws]
DOMString substringData(unsigned long offset, unsigned long count);
void appendData(DOMString data);
[Throws]