implement html5 localStorage support for client-side cache

1 files changed, 7 insertions, 0 deletions

diff --git a/functions.js b/functions.js
index 2aa0dab4f..8b4945edc 100644
--- a/functions.js
+++ b/functions.js
@@ -2184,3 +2184,10 @@ function backend_sanity_check_callback(transport) {
 	} 
 }
 
+function has_local_storage() {
+	try {
+		return 'localStorage' in window && window['localStorage'] != null;
+	} catch (e) {
+		return false;
+	}
+}