Traer informacion desde un blog en variable JSON

[Heiroon]

Me respondo yo mismo:

Aca logre hacer lo que queria, muestro los ultimos posts de un blogger con imagen, fecha y descripcion.

Para el que lo necesite:

Código Javascript:

function showrecentposts(json) {
    
    var ObjetoJSON = json;
    console.log(ObjetoJSON);
    
  for (var i = 0; i < numposts; i++) {
    var entry = json.feed.entry[i];
    var posttitle = entry.title.$t;
    var posturl;
    if (i == json.feed.entry.length) break;
    for (var k = 0; k < entry.link.length; k++) {
      if (entry.link[k].rel == 'alternate') {
        posturl = entry.link[k].href;
        break;
      }
    }
    var postimage = entry.media$thumbnail.url;
    
    posttitle = posttitle.link(posturl);
    var readmorelink = "Leer Art\xEDculo";
    readmorelink = readmorelink.link(posturl);
    var postdate = entry.published.$t;
    var cdyear = postdate.substring(0,4);
    var cdmonth = postdate.substring(5,7);
    var cdday = postdate.substring(8,10);
    var monthnames = new Array();
    monthnames[1] = "Ene";
    monthnames[2] = "Feb";
    monthnames[3] = "Mar";
    monthnames[4] = "Abr";
    monthnames[5] = "May";
    monthnames[6] = "Jun";
    monthnames[7] = "Jul";
    monthnames[8] = "Ago";
    monthnames[9] = "Sep";
    monthnames[10] = "Oct";
    monthnames[11] = "Nov";
    monthnames[12] = "Dic";
    if ("content" in entry) {
      var postcontent = entry.content.$t;}
    else
    if ("summary" in entry) {
        
      var postcontent = '<p class=\'titulo\'>' + entry.summary.$t + '</p>';}
    else var postcontent = "";
    var re = /<\S[^>]*>/g; 
    document.write('<div class=\'bloq_not\' style=\'border-bottom:1px #CCCCCC solid\'>');
    postimage = postimage.replace(/s72-c/g, 's400');
    document.write('<img src="' + postimage + '" width="254" height="104" alt="noticia secundaria" />');
    postcontent = postcontent.replace(re, "");
    if (!standardstyling) document.write('<div class="bbrecpost">');
    if (standardstyling) document.write('<br/>');
    document.write(posttitle);
    
    if (!standardstyling) document.write('</div><div class="bbrecpostsum"><p>');
    if (showpostsummary == true) {
      if (standardstyling) document.write('<br/>');
      if (postcontent.length < numchars) {
         if (standardstyling) document.write('<i>');
         document.write(postcontent);
         if (standardstyling) document.write('</i>');}
      else {
         if (standardstyling) document.write('<i>');
         postcontent = postcontent.substring(0, numchars);
         var quoteEnd = postcontent.lastIndexOf(" ");
         postcontent = postcontent.substring(0,quoteEnd);
         document.write(postcontent + '...' );
         if (showpostdate == true) document.write('<div>' + readmorelink +' <br/> <span>' + cdday + ' ' + monthnames[parseInt(cdmonth,10)] + '</span></div></div>');
         if (standardstyling) document.write('</i>');}
}
    if (!standardstyling) document.write('</p></div>');
    if (standardstyling) document.write('<br/>');
}
if (!standardstyling) document.write('<div class="bbwidgetfooter">');
if (standardstyling) document.write('<br/>');
//document.write('<span style="font-size:80%;">Widget by <a href="http://beautifulbeta.blogspot.com">Beautiful Beta</a></span>');
document.write('</div>');
 
 
}