1 files changed, 9 insertions, 0 deletions
diff --git a/lib/js/urweb.js b/lib/js/urweb.js
index 1277175d..7f636ef9 100644
--- a/lib/js/urweb.js
+++ b/lib/js/urweb.js
@@ -1374,5 +1374,14 @@ function bless(s) {
     return u;
 }
 
+
+// ID generation
+
+var nextId = 0;
+
+function fresh() {
+    return (--nextId).toString();
+}
+
 // App-specific code