From 43017287e2a18177b1b0bbde65f695f16c5b984b Mon Sep 17 00:00:00 2001
From: weru <fromweru@gmail.com>
Date: Sun, 02 May 2021 15:52:30 +0000
Subject: [PATCH] add conditional

---
 assets/js/code.js |   12 +++++++-----
 1 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/assets/js/code.js b/assets/js/code.js
index 3a42552..fdb10f3 100644
--- a/assets/js/code.js
+++ b/assets/js/code.js
@@ -158,11 +158,13 @@
 }
 
 function toggleLineNumbers(elems) {
-  elems.forEach(function (elem, index) {
-    // mark the code element when there are no lines
-    modifyClass(elem, 'pre_nolines')
-  });
-  restrainCodeBlockHeight(elems);
+  if(elems) {
+    elems.forEach(function (elem, index) {
+      // mark the code element when there are no lines
+      modifyClass(elem, 'pre_nolines')
+    });
+    restrainCodeBlockHeight(elems);
+  }
 }
 
 function toggleLineWrap(elem) {

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