From 6861a6dd9752872f281b1817a45d024006323767 Mon Sep 17 00:00:00 2001
From: RunasSudo <runassudo@yingtongli.me>
Date: Thu, 23 Jul 2020 22:31:12 +1000
Subject: [PATCH] Show error message when preview fails

---
 wikinote/static/js/page.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/wikinote/static/js/page.js b/wikinote/static/js/page.js
index bf634c3..bb688b0 100644
--- a/wikinote/static/js/page.js
+++ b/wikinote/static/js/page.js
@@ -23,7 +23,11 @@ document.querySelectorAll('.tooltip.xref').forEach(function(el) {
 			
 			var xhr = new XMLHttpRequest();
 			xhr.addEventListener('load', function() {
-				el.querySelector('.tooltip-content').innerHTML = xhr.responseText;
+                if (xhr.status == 200) {
+                    el.querySelector('.tooltip-content').innerHTML = xhr.responseText;
+                } else {
+                    el.querySelector('.tooltip-content').innerHTML = 'Error';
+                }
 			})
 			xhr.open('GET', '/preview/' + el.dataset['xref']);
 			xhr.send();