블로그 포스트에서 최신 댓글을 뽑아 표시하는 위젯을 추가해 보자.
레이아웃 > 사이드바 가젯추가 > HTML / 자바스크립트 위젯을 추가하고 아래 소스 코드를 복사해서 붙인다.
스타일과 변수 부분을 수정할 수 있다.


<style type="text/css">
/*
Widget: Simple Recent Comment Widget for Blogger - Version 1.1
Author: Tien Nguyen
URL: http://sneeit.com/simple-recent-comment-widget-blogger/
*/

a.sneeit-srcbw {
/*item-color*/color: #000000;/*item-color*/
/*border-color*/border-top: 1px solid #dddddd;/*border-color*/
display: block;
padding: 1em 1.5em;
position: relative;
}

.sneeit-srcbw-icon-comment {
position: absolute;
left: 0;
top: 1.1em;
}

.sneeit-srcbw-icon-arrow {
/* arrow-icon-color*/color: #738aba;/* arrow-icon-color*/
position: absolute;
right: 0;
font-size: 200%;
top: 50%;
margin-top: -0.55em;
}

.sneeit-srcbw-credit {
font-size: 90%;
text-align: right;
padding: 1em 0;
/*credit*/display: block;/*credit*/
/*border-color*/border-top: 1px solid #dddddd;/*border-color*/
}

#sneeit-srcbw-exclude {
display: none!important;
}

html[dir="rtl"] .sneeit-srcbw-icon-comment {
right:0;
left: auto;
}
html[dir="rtl"] .sneeit-srcbw-icon-arrow{
left:0;
right: auto;
}
html[dir="rtl"] .sneeit-srcbw-credit {
text-align: left;
}
</style>

<noscript id="sneeit-srcbw-exclude"></noscript>

<script type="text/javascript">
// settings
var sneeit_srcbw_count = 2; // change the number of comments 댓글수
var sneeit_srcbw_summary_length = 18; // summary length 글자수
var sneeit_srcbw_icon_comment = 'fa-comment-o'; // comment icon 폰트어썸 아이콘
var sneeit_srcbw_icon_arrow = 'fa-angle-right'; // arrow icon 폰트어썸 화살표

_s7GpE = ['link','href','font-awesome','link','text/css','stylesheet','https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css','sneeit-srcbw-exclude','\n','string','undefined','feed','entry','Not found any comment',' ...','','','alternate','self','#','/','#c','<a class="sneeit-srcbw" href="','"><i class="sneeit-srcbw-icon-comment fa ','"></i><span>',' : ','</span><i class="sneeit-srcbw-icon-arrow fa ','"></i></a>','<span class="sneeit-srcbw-credit">최신 댓글</span>','<script type="text/javascript" src="/feeds/comments/summary?alt=json-in-script&max-results=','&callback=_fCiE"><\/script>'];var _vHpF=document.getElementsByTagName(_s7GpE[0]);for(var _vLbB=0;_vLbB<_vHpF.length;_vLbB++){if(_s7GpE[1] in _vHpF[_vLbB]&&_vHpF[_vLbB].href.indexOf(_s7GpE[2])!=-1){break;}}if(_vLbB>=_vHpF.length){var _vLbJ=document.createElement(_s7GpE[3]);_vLbJ.type=_s7GpE[4];_vLbJ.rel=_s7GpE[5];_vLbJ.href=_s7GpE[6];document.head.appendChild(_vLbJ);}var _vRqN=document.getElementById(_s7GpE[7]).innerHTML;var _vSbX=sneeit_srcbw_count;_vRqN=_vRqN.trim();if(_vRqN){_vRqN=_vRqN.split(_s7GpE[8]);_vSbX=_vSbX*(_vRqN.length+2);}function _fCiE(json){if(typeof(json)==_s7GpE[9]||typeof(json)==_s7GpE[10]||!(_s7GpE[11] in json)||!(_s7GpE[12] in json.feed)||!json.feed.entry.length){document.write(_s7GpE[13]);return;}var _vQbX=0;for(var _vLbB=0;_vLbB<json.feed.entry.length&&_vQbX<sneeit_srcbw_count;_vLbB++){var _vOlU=json.feed.entry[_vLbB];var _vQjW=_vOlU.author[0].name.$t;var _vRcD=_vOlU.summary.$t;if(_vRqN.indexOf(_vQjW)!=-1){continue;}_vQbX++;if(_vRcD.length>sneeit_srcbw_summary_length){_vRcD=_vRcD.substring(0,sneeit_srcbw_summary_length)+_s7GpE[14];}var _vVgK=_s7GpE[15];var _vVeS=_s7GpE[16];for(var _vIlN=0;_vIlN<_vOlU.link.length;_vIlN++){var _vLbJ=_vOlU.link[_vIlN];if(_s7GpE[17]==_vLbJ.rel){_vVgK=_vLbJ.href;}else if(_s7GpE[18]==_vLbJ.rel){_vVeS=_vLbJ.href;}}if(!_vVgK){continue;}if(_vVgK.indexOf(_s7GpE[19])==-1){_vVeS=_vVeS.split(_s7GpE[20]);_vVeS=_vVeS[_vVeS.length-1];_vVgK+=(_s7GpE[21]+_vVeS);}document.write(_s7GpE[22]+_vVgK+_s7GpE[23]+sneeit_srcbw_icon_comment+_s7GpE[24]+_vQjW+_s7GpE[25]+_vRcD+_s7GpE[26]+sneeit_srcbw_icon_arrow+_s7GpE[27]);}document.write(_s7GpE[28]);}document.write(_s7GpE[29]+_vSbX+_s7GpE[30]);

</script>