diff --git a/js/doc/marked-demo.js b/js/doc/marked-demo.js
new file mode 100644
index 0000000..3c380c4
--- /dev/null
+++ b/js/doc/marked-demo.js
@@ -0,0 +1,30 @@
+var myMarked = require('./marked');
+
+// Get reference
+var myRenderer = new myMarked.Renderer();
+
+// Override function
+myRenderer.heading = function (text, level) {
+  var escapedText = text.toLowerCase().replace(/[^\w]+/g, '-');
+
+  return level+': '+text+'\n';
+};
+// Set options
+// `highlight` example uses `highlight.js`
+myMarked.setOptions({
+  renderer: myRenderer,
+  highlight: function(code) {
+    return require('highlight.js').highlightAuto(code).value;
+  },
+  pedantic: false,
+  gfm: true,
+  tables: true,
+  breaks: false,
+  sanitize: false,
+  smartLists: true,
+  smartypants: false,
+  xhtml: false
+});
+
+// Compile
+console.log(myMarked('# Intro\nI am using __markdown__.'));