How to Display Top Commenter in Blogger Sidebar

In the past, we have already showed you how to display most recent comments in blogger. However, one of our users contacted us asking how to display top commenters in the sidebar of his blogger site. Comments are the handiest way of engaging users on your content. You might have already noticed such widgets on various popular blogs, as it’s the best way to feature your most loyal reader so that it could motivate new users to comment and gain the same luxury. In this article, we will show you how to display top commenter in blogger sidebar. 

The very first thing you need to do is to login to your blogger account by visiting blogger.com. Once you are logged in, select the blog you’ll like to add the top comment widget. Go to Template >> Edit HTML >> Search for ]]></b:skin> and just above it paste this code:

.top-commentators {
margin: 3px 0;
border-bottom: 1px dotted #ccc;
}
.avatar-top-commentators {
vertical-align:middle;
border-radius: 30px;
}
.top-commentators .commenter-link-name {
padding-left:0;
}

Now go to Layout >> Add a Gadget >> from the list of widgets select Add HTML/JavaScript and proceed to the next step.

Now in the text area of the widget, paste the following JavaScript code. This code would be responsible for digging, finding and displaying the top commenters of your blog. You can also fill the tile of the widget i.e. Our Top Commenter or etc according to your needs.

<script type="text/javascript">
var maxTopCommenters = 8;
var minComments = 1;  
var numDays = 0;      
var excludeMe = true;
var excludeUsers = ["Anonymous", "someotherusertoexclude"];
var maxUserNameLength = 42;
//
var txtTopLine = '<b>[#].</b> [image] [user] ([count])';
var txtNoTopCommenters = 'No Recent commentators at this time.';
var txtAnonymous = '';
//
var sizeAvatar = 33;
var cropAvatar = true;
//
var urlNoAvatar = "https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjxkwqkXlCSBtUFR9AjbTdQcnsvvDer5WJkLC86kSr1WJxzHAKdeA8JGiTRINNrpHgXdAddBttlAfdyas6ZeHXtW5mAy_RzjCOEJhvYn21l66rslcKhLUSjAG-sG4wXLVMjE_SKMwCRwoQF/s1600/avatar_blue_m_96.png" + sizeAvatar;
var urlAnoAvatar = 'https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgQI7PpJ7rJaS_e7uSgFUf-mBOCDQGvFh7eAcjlIFv8v8hLCS-jpMaZ1OQYnV9wVkZKaPsyGw0SWJqX3Y4Lzs6rTxVZcEq6khRPBq86JG1ZDSyMRR1AywRnzG4WCJfiImAv6RZuLRKle6Va/s1600/avatar1.png' + sizeAvatar;
var urlMyProfile = '';
var urlMyAvatar = '';
if(!Array.indexOf) {
 Array.prototype.indexOf=function(obj) {
  for(var i=0;i<this.length;i++) if(this[i]==obj) return i;
  return -1;
}}
function replaceTopCmtVars(text, item, position)
{
  if(!item || !item.author) return text;
  var author = item.author;
  var authorUri = "";
  if(author.uri && author.uri.$t != "")
    authorUri = author.uri.$t;
  var avaimg = urlAnoAvatar;
  var bloggerprofile = "http://www.blogger.com/profile/";
  if(author.gd$image && author.gd$image.src && authorUri.substr(0,bloggerprofile.length) == bloggerprofile)
    avaimg = author.gd$image.src;
  else {
    var parseurl = document.createElement('a');
    if(authorUri != "") {
      parseurl.href = authorUri;
      avaimg = 'http://www.google.com/s2/favicons?domain=' + parseurl.hostname;
    }
  }
  if(urlMyProfile != "" && authorUri == urlMyProfile && urlMyAvatar != "")
    avaimg = urlMyAvatar;
  if(avaimg == "http://img2.blogblog.com/img/b16-rounded.gif" && urlNoAvatar != "")
    avaimg = urlNoAvatar;
  var newsize="s"+sizeAvatar;
  avaimg = avaimg.replace(/\/s\d\d+-c\//, "/"+newsize+"-c/");
  if(cropAvatar) newsize+="-c";
  avaimg = avaimg.replace(/\/s\d\d+(-c){0,1}\//, "/"+newsize+"/");
  var authorName = author.name.$t;
  if(authorName == 'Anonymous' && txtAnonymous != '' && avaimg == urlAnoAvatar)
    authorName = txtAnonymous;
  var imgcode = '<img class="avatar-top-commentators" height="'+sizeAvatar+'" width="'+sizeAvatar+'" title="'+authorName+'" src="'+avaimg+'" />';
  if(authorUri!="") imgcode = '<a href="'+authorUri+'">'+imgcode+'</a>';
  if(maxUserNameLength > 3 && authorName.length > maxUserNameLength)
    authorName = authorName.substr(0, maxUserNameLength-3) + "...";
  var authorcode = authorName;
  if(authorUri!="") authorcode = '<a class="commenter-link-name" href="'+authorUri+'">'+authorcode+'</a>';
  text = text.replace('[user]', authorcode);
  text = text.replace('[image]', imgcode);
  text = text.replace('[#]', position);
  text = text.replace('[count]', item.count);
  return text;
}
var topcommenters = {};
var ndxbase = 1;
function showTopCommenters(json) {
  var one_day=1000*60*60*24;
  var today = new Date();
  if(urlMyProfile == "") {
    var elements = document.getElementsByTagName("*");
    var expr = /(^| )profile-link( |$)/;
    for(var i=0 ; i<elements.length ; i++)
      if(expr.test(elements[i].className)) {
        urlMyProfile = elements[i].href;
        break;
      }
  }
  if(json && json.feed && json.feed.entry && json.feed.entry.length) for(var i = 0 ; i < json.feed.entry.length ; i++ ) {
    var entry = json.feed.entry[i];
    if(numDays > 0) {
      var datePart = entry.published.$t.match(/\d+/g);
      var cmtDate = new Date(datePart[0],datePart[1]-1,datePart[2],datePart[3],datePart[4],datePart[5]);

      var days = Math.ceil((today.getTime()-cmtDate.getTime())/(one_day));
      if(days > numDays) break;
    }
    var authorUri = "";
    if(entry.author[0].uri && entry.author[0].uri.$t != "")
      authorUri = entry.author[0].uri.$t;
    if(excludeMe && authorUri != "" && authorUri == urlMyProfile)
      continue;
    var authorName = entry.author[0].name.$t;
    if(excludeUsers.indexOf(authorName) != -1)
      continue;
    var hash=entry.author[0].name.$t + "-" + authorUri;
    if(topcommenters[hash])
      topcommenters[hash].count++;
    else {
      var commenter = new Object();
      commenter.author = entry.author[0];
      commenter.count = 1;
      topcommenters[hash] = commenter;
    }
  }
  if(json && json.feed && json.feed.entry && json.feed.entry.length && json.feed.entry.length == 200) {
    ndxbase += 200;
    document.write('<script type="text/javascript" src="http://'+window.location.hostname+'/feeds/comments/default?redirect=false&max-results=200&start-index='+ndxbase+'&alt=json-in-script&callback=showTopCommenters"></'+'script>');
    return;
  }
  // convert object to array of tuples
  var tuplear = [];
  for(var key in topcommenters) tuplear.push([key, topcommenters[key]]);
  tuplear.sort(function(a, b) {
    if(b[1].count-a[1].count)
        return b[1].count-a[1].count;
    return (a[1].author.name.$t.toLowerCase() < b[1].author.name.$t.toLowerCase()) ? -1 : 1;
  });
  var realcount = 0;
  for(var i = 0; i < maxTopCommenters && i < tuplear.length ; i++) {
    var item = tuplear[i][1];
    if(item.count < minComments)
        break;
    document.write('<di'+'v class="top-commentators">');
    document.write(replaceTopCmtVars(txtTopLine, item, realcount+1));
    document.write('</d'+'iv>');
    realcount++;
  }
  if(!realcount)
    document.write(txtNoTopCommenters);
}
document.write('<script type="text/javascript" src="http://'+window.location.hostname+'/feeds/comments/default?redirect=false&max-results=200&alt=json-in-script&callback=showTopCommenters"></'+'script>');
</script>

Once everything is done, save the widget by pressing orange “Save” button located towards the bottom and the widget will start appearing at your blog.  Now, it is up to you where you exactly want the widget to appear either in the sidebar or footer. In Layout area, simply select and drag the widget to a new position and press “Save Arrangement button”.

We hope this tutorial may have helped you in learning how to display top commenters in blogger sidebar. If you liked this widget then, do take a look at our Blogger Widgets Inventory. Share this article with your friends on Google+, Facebook or twitter.