1 files changed, 23 insertions, 0 deletions
diff --git a/lib/output/modifiers/addHeadingId.js b/lib/output/modifiers/addHeadingId.js
new file mode 100644
index 0000000..e2e2720
--- /dev/null
+++ b/lib/output/modifiers/addHeadingId.js
@@ -0,0 +1,23 @@
+var slug = require('github-slugid');
+var editHTMLElement = require('./editHTMLElement');
+
+/**
+    Add ID to an heading
+
+    @param {HTMLElement} heading
+*/
+function addId(heading) {
+    if (heading.attr('id')) return;
+    heading.attr('id', slug(heading.text()));
+}
+
+/**
+    Add ID to all headings
+
+    @param {HTMLDom} $
+*/
+function addHeadingId($) {
+    return editHTMLElement($, 'h1,h2,h3,h4,h5,h6', addId);
+}
+
+module.exports = addHeadingId;