diff --git a/footnote.js b/footnote.js
new file mode 100644
index 0000000..6f5d8cd
--- /dev/null
+++ b/footnote.js
@@ -0,0 +1,49 @@
+/*
+footnote.js: A filter for Hexo to generate footnotes. Place this file in /scripts/footnote.js.
+========================================================================
+Author: kuanyui(azazabc123[at]g~~~m~~~a~~~i~~~l[dot]com), Yoxem (yoxem.tem98[ A T ]nctu.edu.tw)
+Date: 20180730
+License: WTFPL 1.0
+========================================================================
+The following string in article
+ {fn|I'm the a lot lot of content.}
+Will be converted into
+
+And the following block will be added in the bottom of the article.
+
+Adding following CSS into your site is recommended:
+.footpara {
+ display: inline;
+ margin-left: 5px;
+}
+*/
+
+var lang = {"en_US": "Footnotes", "zh_TW": "腳註", "ja_JP": "脚注", "zh_CN": "脚注", "nan": "注跤 [tsù-kha]"};
+
+if (lang[hexo.config.language]) {
+ var fnName = lang[hexo.config.language];
+} else {
+ var fnName = "註腳";
+}
+
+hexo.extend.filter.register('pre', function(data, callback) {
+ var num = 0;
+ var footContent = "";
+ var RE = new RegExp('\\{fn\\|(.+?)\\}', 'g');
+ data.content = data.content.replace(RE, function(x, y) {
+ num += 1;
+ footContent += '';
+ return '';
+ });
+ if (footContent.length > 0) {
+ data.content = data.content + '';
+ }
+ return data;
+});