How to get the latest comment.

blogger.js

var commentURL;
var links = document.getElementsByTagName("link");
for (var i=0; i < links.length; i++) {
    var href = links[i].href;
    //look for the comment feed
    if (href.match(/^http:\/\/\w+.blogspot.com\/feeds\/\d+\/comments\/default$/)) {
        commentURL = href;
        break;
    }
}

//if the commentURL was found
if (commentURL) {
    //go an get the last comment
    var i=document.createElement("script");
    i.src=unescape(commentURL+"?alt=json-in-script&callback=onBlogSpotComment&max-results=1");
    i.async=true;
    i.charset="UTF-8";
    document.getElementsByTagName("head")[0].appendChild(i);
}