auto merge of #20865 : killercup/rust/patch-3, r=alexcrichton

This adds an early return to skip code blocks without IDs. Fixes #20864.
rust-lang · Jan 11, 2015 · 2127e0d · 2127e0d
2 parents 9d2e9b9 + 89ca858
commit 2127e0d
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/src/librustdoc/html/static/playpen.js b/src/librustdoc/html/static/playpen.js
@@ -14,6 +14,7 @@
 (function() {
     if (window.playgroundUrl) {
         $('pre.rust').hover(function() {
+            if (!$(this).attr('id')) { return; }
             var id = '#' + $(this).attr('id').replace('rendered', 'raw');
             var a = $('<a>').text('⇱').attr('class', 'test-arrow');
             var code = $(id).text();