From 8bb1a8336a4479710421a98b9f8ae807624b0ceb Mon Sep 17 00:00:00 2001
From: flocondetoile <contact@flocondetoile.fr>
Date: Sun, 9 Jul 2017 13:57:29 +0200
Subject: [PATCH 1/2] Add Back to top feature

---
 docs/index.md |  2 ++
 lib/toc.js    | 22 ++++++++++++++++++++++
 2 files changed, 24 insertions(+)

diff --git a/docs/index.md b/docs/index.md
index 61b6d2c..e17b7ad 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -30,6 +30,8 @@ Defaults shown below
 		'listType': '<ul/>', //use unordered list. If you need ordered one instead pass: '<ol/>'
 		'smoothScrolling': true, //enable or disable smooth scrolling on click
 		'prefix': 'toc', //prefix for anchor tags and class names
+		'backToTop': false, //add back to top link on heading
+		'backToTopLabel': 'Back to top', //label used for back to top link
 		'onHighlight': function(el) {}, //called when a new section is highlighted 
 		'highlightOnScroll': true, //add class to heading that is currently in focus
 		'highlightOffset': 100, //offset to trigger the next headline
diff --git a/lib/toc.js b/lib/toc.js
index 378259f..1cb70bc 100644
--- a/lib/toc.js
+++ b/lib/toc.js
@@ -58,12 +58,28 @@ $.fn.toc = function(options) {
       headingOffsets.push($h.offset().top - opts.highlightOffset);
 
       var anchorName = opts.anchorName(i, heading, opts.prefix);
+      var anchorNameToTop = anchorName + '-to-top';
 
       //add anchor
       if(heading.id !== anchorName) {
         var anchor = $('<span/>').attr('id', anchorName).insertBefore($h);
       }
 
+      // Add back to top link.
+      if (opts.backToTop) {
+        var anchorToTop = $('<a/>')
+          .attr('href', '#' + anchorNameToTop)
+          .text(opts.backToTopLabel)
+          .insertAfter($h)
+          .bind('click', function(e) {
+            $(window).unbind('scroll', highlightOnScroll);
+            scrollTo(e, function() {
+              $(window).bind('scroll', highlightOnScroll);
+            });
+            el.trigger('selected', $(this).attr('href'));
+          });
+      }
+
       //build TOC item
       var a = $('<a/>')
         .text(opts.headerText(i, heading, $h))
@@ -76,6 +92,10 @@ $.fn.toc = function(options) {
           el.trigger('selected', $(this).attr('href'));
         });
 
+      if (opts.backToTop) {
+        a.attr('id', anchorNameToTop);
+      }
+
       var li = $('<li/>')
         .addClass(opts.itemClass(i, heading, $h, opts.prefix))
         .append(a);
@@ -100,6 +120,8 @@ jQuery.fn.toc.defaults = {
   },
   scrollToOffset: 0,
   prefix: 'toc',
+  backToTop: false,
+  backToTopLabel: 'Back to top',
   activeClass: 'toc-active',
   onHighlight: function() {},
   highlightOnScroll: true,

From 2c05b25b39d44abcc9a29859354821f54d74ef30 Mon Sep 17 00:00:00 2001
From: flocondetoile <contact@flocondetoile.fr>
Date: Sun, 9 Jul 2017 23:57:08 +0200
Subject: [PATCH 2/2] Fix duplicate anchorName if heading has same text

---
 dist/toc.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dist/toc.js b/dist/toc.js
index f77a829..4dddbd8 100644
--- a/dist/toc.js
+++ b/dist/toc.js
@@ -170,7 +170,7 @@ jQuery.fn.toc.defaults = {
     if (verboseIdCache[candidateId]) {
       var j = 2;
       
-      while(verboseIdCache[candidateId + j]) {
+      while(verboseIdCache[candidateId + '-' + j]) {
         j++;
       }
       candidateId = candidateId + '-' + j;