tree 944a54b54d0756d6f79272bbfd35058c5df0778a
parent 7ae4fa025c2d59c42b428d08ca2e9d2e2fb1ef50
author Yamagishi Kazutoshi <ykzts@desire.sh> 1516947136 +0900
committer Andrew Bonventre <andybons@golang.org> 1517264182 +0000

[x/tour] 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>
X-Tour-Commit: 8e3b0c2fe87f92ea28e34688bf90a281b991f4ce