Prevent XSS in markdown rendering

public/js/index.js

@@ -2131,6 +2131,7 @@ var lastResult = null;
 function updateViewInner() {
     if (currentMode == modeType.edit || !isDirty) return;
     var value = editor.getValue();
+    value = filterXSS(value); // prevent xss
     md.meta = {};
     md.render(value); //only for get meta
     parseMeta(md, ui.area.markdown, $('#toc'), $('#toc-affix'));

public/views/foot.ejs

@@ -29,6 +29,7 @@
 <script src="/vendor/remarkable-regex.js" defer></script>
 <script src="/vendor/gist-embed.js" defer></script>
 <script src="/vendor/lz-string/libs/lz-string.min.js" defer></script>
+<script src="/vendor/xss/dist/xss.min.js" defer></script>
 <script src="/vendor/string.min.js" defer></script>
 <script src="/vendor/highlight-js/highlight.min.js" defer></script>
 <script src="/vendor/js.cookie.js" defer></script>