commit 8e3b0c2fe87f92ea28e34688bf90a281b991f4ce
author Yamagishi Kazutoshi <ykzts@desire.sh> Fri Jan 26 15:12:16 2018 +0900
committer Andrew Bonventre <andybons@golang.org> Mon Jan 29 22:16:22 2018 +0000
tree 6633e61387a178fa8e16fb6fc9ae8a9f34e2370b
parent 8d672c900895404ef380aca75be10fa82f191f84

tour: check if file content is set before storing in localStorage

file() returns undefined when there is no file to display, like on
https://tour.golang.org/welcome/2

Change-Id: Ia26719537949c9909947068d790f07e2eee8f9ff
Reviewed-on: https://go-review.googlesource.com/90075
Reviewed-by: Andrew Bonventre <andybons@golang.org>

static/js/controllers.js

diff --git a/static/js/controllers.js b/static/js/controllers.js
index e035544..c64fb04 100755
--- a/static/js/controllers.js
+++ b/static/js/controllers.js
@@ -22,7 +22,7 @@
                 var f = file();
                 return f && f.Content;
             }, function(val) {
-                storage.set(file().Hash, val);
+                if (val) storage.set(file().Hash, val);
             });
         });