Top Commentators Widget with Avatars for Blogger

This Top Commentators gadget comes with user's avatar and is done with JavaScript.

How to Add the Top Commenters Gadget to Blogger

1. To add this gadget, you have to go to Layout, click on Add a Gadget link.

2. Select the HTML/JavaScript gadget and copy/paste within the empty box the following code:

<style type="text/css">
.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;
}
</style>
<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 top commentators at this time.';
var txtAnonymous = '';
//
var sizeAvatar = 33;
var cropAvatar = true;
//
var urlNoAvatar = "https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgvy2qhyphenhyphenqCXg-ziewgRi0VFDCm1htffVuA5S0cSSo-JRE6Wlq2jpjbHDw_N7KmYV93KaFyEd8Uidz4Zm9QYmdczSgCD3m35Mm4wA0mKBO9hRtX-ugr9OaJSSRC097ehybxZs9tClnJkcW0L/s1600/avatar_blue_m_96.png" + sizeAvatar;
var urlAnoAvatar = 'https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgGiXMyUaWF2nVxgU5j655Z0cNaIBKMuFgWUCTSQkuYLrOIPGOnF7iqq5ox_UqbIwFsrzPNd4AOSE4I48b0FR_ftmCw2b5hdnKD83DIQ3waqniQlT4T6cLY868OvycTOm-sDu1O6Ku8M7Ns/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>