Related Posts Widget for Blogger

Everyone knows that Related Posts Widget for Wordpress is there but not for Blogger. I have been looking for the past few days on how to add "Related Posts" widget for my blogger blog.

By searching in various blogs, I came across Mohamed Rias's post in which I have done some modifications to use the same for my blog.

Below are the steps, I have used to add the widget to my blog:

1) Navigate to "Layout" > "Edit HTML" in your Blogger Dashboard.

2) Add the below code above </head>

<style>
#related-posts {
float : left;
width : 540px;
margin-top:20px;
margin-left : 5px;
margin-bottom:20px;
font : 18px Arial;
margin-bottom:10px;
}
#related-posts .widget {
list-style-type : none;
margin : 5px 0 5px 0;
padding : 0;
}
#related-posts .widget h2, #related-posts h2 {
color : #1b1b19;
font-size : 20px;
font-weight : normal;
margin : 5px 7px 0;
padding : 0 0 5px;
}
#related-posts a {
color : #333333;
font-size : 13px;
text-decoration : none;
}
#related-posts a:hover {
color : #054474;
text-decoration : none;
}
#related-posts ul {
border : medium none;
margin : 10px;
padding : 0;
}
</style>

<script type='text/javascript'>
//<![CDATA[
var relatedTitles = new Array();
var relatedTitlesNum = 0;
var relatedUrls = new Array();
function related_results_labels(json) {
for (var i = 0; i < json.feed.entry.length; i++) {
var entry = json.feed.entry[i];
relatedTitles[relatedTitlesNum] = entry.title.$t;
for (var k = 0; k < entry.link.length; k++) {
if (entry.link[k].rel == 'alternate') {
relatedUrls[relatedTitlesNum] = entry.link[k].href;
relatedTitlesNum++;
break;
}
}
}
}
function removeRelatedDuplicates() {
var tmp = new Array(0);
var tmp2 = new Array(0);
for(var i = 0; i < relatedUrls.length; i++) {
if(!contains(tmp, relatedUrls[i])) {
tmp.length += 1;
tmp[tmp.length - 1] = relatedUrls[i];
tmp2.length += 1;
tmp2[tmp2.length - 1] = relatedTitles[i];
}
}
relatedTitles = tmp2;
relatedUrls = tmp;
}
function contains(a, e) {
for(var j = 0; j < a.length; j++) if (a[j]==e) return true;
return false;
}
function printRelatedLabels() {
var r = Math.floor((relatedTitles.length - 1) * Math.random());
var i = 0;
document.write('<ul>');
while (i < relatedTitles.length && i < 20) {
document.write('<li><a href="' + relatedUrls[r] + '">' + relatedTitles[r] + '</a></li>');
if (r < relatedTitles.length - 1) {
r++;
} else {
r = 0;
}
i++;
}
document.write('</ul>');
}
//]]>
</script>

3) Search for <p><data:post.body/></p> and add the below code after it.

<b:if cond='data:blog.pageType == "item"'>
<div id='related-posts'>
<h2>Related Articles<b:loop values='data:post.labels' var='label'><b:if cond='data:blog.pageType == "item"'>
<script expr:src='"/feeds/posts/default/-/" + data:label.name + "?alt=json-in-script&callback=related_results_labels&max-results=5"' type='text/javascript'/></b:if></b:loop> </h2>
<script type='text/javascript'> removeRelatedDuplicates(); printRelatedLabels(); </script>
</div></b:if>

You can customize as to how many links you want to display by changing the "max-results" value to any number you like.