fff

2026-02-07 10:53:54 +08:00
parent 8d7c91b7e4
commit 033a6c2eaf
1 changed files with 8 additions and 2 deletions
--- a/module.js
+++ b/module.js
@@ -44,11 +44,17 @@ M.mod_programming.init_history = function(Y) {

    var r = Y.all('.diff1');
    if (r.size() > 0) {
-        r.item(0).hide();
+        var firstDiff = r.item(0);
+        if (firstDiff) {
+            firstDiff.hide();
+        }
    }
    r = Y.all('.diff2');
    if (r.size() > 0) {
-        r.item(r.size() - 1).hide();
+        var lastDiff = r.item(r.size() - 1);
+        if (lastDiff) {
+            lastDiff.hide();
+        }
    }

    var is_history_diff_form_submitable = function() {