Add comment explaining internalGetID

Ben Newman committed Jul 22, 2013 at 10:24 UTC add809be2151a828f6a02fff393ad43b01486b28

1 file changed +3

src/core/ReactID.js

@@ -57,6 +57,9 @@ function getID(node) {

57 }

59 function internalGetID(node) {

60 + // If node is something like a window, document, or text node, none of

61 + // which support attributes or a .getAttribute method, gracefully return

62 + // the empty string, as if the attribute were missing.

63 return node && node.getAttribute && node.getAttribute(ATTR_NAME) || '';

64 }