How to Install Page Number Navigation on Blogger

First we first open the Blogger → Dashboard → Themes → Edit HTML  and put the following CSS code above the </b:skin> tag.

/* === PAGE NUMBER CODEPELAJAR === */
#blog-pager{clear:both;margin:0 auto;text-align:center;padding:7px}
.blog-pager{background:none}
.displaypageNum a,.showpage a,.pagecurrent{padding:10px 10px;margin-right:5px;color:#444;background-color:#fafafa;display:block;border-radius:3px;transition:all .5s}
.displaypageNum a:hover,.showpage a:hover,.pagecurrent{background:#e91e63;text-decoration:none;color:#fff}
#blog-pager .showpage,#blog-pager,.pagecurrent{font-weight:bold;color:#fff}
.showpageOf{display:none!important}
#blog-pager .pages{border:none;-webkit-box-shadow:0 5px 3px -1px rgba(50,50,50,0.53);-moz-box-shadow:0 5px 3px -1px rgba(50,50,50,0.53);box-shadow:0 5px 3px -1px rgba(50,50,50,0.53)}
/* === END === */

After that, put the following Javascript code right below </body>

<b:if cond='data:blog.pageType != &quot;item&quot;'>
<b:if cond='data:blog.pageType != &quot;static_page&quot;'>
<script>/*<![CDATA[*/
var perPage=8; /* === JUMLAH POSTINGAN SETIAP HALAMAN == */
var numPages=4; /* ===  JUMLAH HALAMAN YANG INGIN DITAMPILKAN SEBELUM LAST === */
var prevText ='First'; /* ==== UNTUK LONCAT KE HALAMAN PERTAMA === */
var nextText ='Last'; /* === UNTUK LONCAT KE HALAMAN TERAKHIR === */
var urlactivepage=location.href;
var home_page="/";
/* PAGE BY NUMBER */
var noPage;var currentPage;var currentPageNo;var postLabel;pagecurrentg();function looppagecurrentg(pageInfo){var html='';pageNumber=parseInt(numPages/2);if(pageNumber==numPages-pageNumber){numPages=pageNumber*2+1}pageStart=currentPageNo-pageNumber;if(pageStart<1)pageStart=1;lastPageNo=parseInt(pageInfo/perPage)+1;if(lastPageNo-1==pageInfo/perPage)lastPageNo=lastPageNo-1;pageEnd=pageStart+numPages-1;if(pageEnd>lastPageNo)pageEnd=lastPageNo;html+="<span class='showpageOf'>Page "+currentPageNo+' of '+lastPageNo+"</span>";var prevNumber=parseInt(currentPageNo)-1;if(currentPageNo>1){if(currentPageNo==2){if(currentPage=="page"){html+='<span class="showpage"><a href="'+home_page+'">'+prevText+'</a></span>'}else{html+='<span class="displaypageNum"><a href="/search/label/'+postLabel+'?&max-results='+perPage+'">'+prevText+'</a></span>'}}else{if(currentPage=="page"){html+='<span class="displaypageNum"><a href="#" onclick="redirectpage('+prevNumber+');return false">'+prevText+'</a></span>'}else{html+='<span class="displaypageNum"><a href="#" onclick="redirectlabel('+prevNumber+');return false">'+prevText+'</a></span>'}}}if(pageStart>1){if(currentPage=="page"){html+='<span class="displaypageNum"><a href="'+home_page+'">1</a></span>'}else{html+='<span class="displaypageNum"><a href="/search/label/'+postLabel+'?&max-results='+perPage+'">1</a></span>'}}if(pageStart>2){html+='... '}for(var jj=pageStart;jj<=pageEnd;jj++){if(currentPageNo==jj){html+='<span class="pagecurrent">'+jj+'</span>'}else if(jj==1){if(currentPage=="page"){html+='<span class="displaypageNum"><a href="'+home_page+'">1</a></span>'}else{html+='<span class="displaypageNum"><a href="/search/label/'+postLabel+'?&max-results='+perPage+'">1</a></span>'}}else{if(currentPage=="page"){html+='<span class="displaypageNum"><a href="#" onclick="redirectpage('+jj+');return false">'+jj+'</a></span>'}else{html+='<span class="displaypageNum"><a href="#" onclick="redirectlabel('+jj+');return false">'+jj+'</a></span>'}}}if(pageEnd<lastPageNo-1){html+=''}if(pageEnd<lastPageNo){if(currentPage=="page"){html+='<span class="displaypageNum"><a href="#" onclick="redirectpage('+lastPageNo+');return false">'+lastPageNo+'</a></span>'}else{html+='<span class="displaypageNum"><a href="#" onclick="redirectlabel('+lastPageNo+');return false">'+lastPageNo+'</a></span>'}}var nextnumber=parseInt(currentPageNo)+1;if(currentPageNo<lastPageNo){if(currentPage=="page"){html+='<span class="displaypageNum"><a href="#" onclick="redirectpage('+nextnumber+');return false">'+nextText+'</a></span>'}else{html+='<span class="displaypageNum"><a href="#" onclick="redirectlabel('+nextnumber+');return false">'+nextText+'</a></span>'}}var pageArea=document.getElementsByName("pageArea");var blogPager=document.getElementById("blog-pager");for(var p=0;p<pageArea.length;p++){pageArea[p].innerHTML=html}if(pageArea&&pageArea.length>0){html=''}if(blogPager){blogPager.innerHTML=html}}function totalcountdata(root){var feed=root.feed;var totaldata=parseInt(feed.openSearch$totalResults.$t,10);looppagecurrentg(totaldata)}function pagecurrentg(){var thisUrl=urlactivepage;if(thisUrl.indexOf("/search/label/")!=-1){if(thisUrl.indexOf("?updated-max")!=-1){postLabel=thisUrl.substring(thisUrl.indexOf("/search/label/")+14,thisUrl.indexOf("?updated-max"))}else{postLabel=thisUrl.substring(thisUrl.indexOf("/search/label/")+14,thisUrl.indexOf("?&max"))}}if(thisUrl.indexOf("?q=")==-1&&thisUrl.indexOf(".html")==-1){if(thisUrl.indexOf("/search/label/")==-1){currentPage="page";if(urlactivepage.indexOf("#PageNo=")!=-1){currentPageNo=urlactivepage.substring(urlactivepage.indexOf("#PageNo=")+8,urlactivepage.length)}else{currentPageNo=1}document.write("<script src=\""+home_page+"feeds/posts/summary?max-results=1&alt=json-in-script&callback=totalcountdata\"><\/script>")}else{currentPage="label";if(thisUrl.indexOf("&max-results=")==-1){perPage=20}if(urlactivepage.indexOf("#PageNo=")!=-1){currentPageNo=urlactivepage.substring(urlactivepage.indexOf("#PageNo=")+8,urlactivepage.length)}else{currentPageNo=1}document.write('<script src="'+home_page+'feeds/posts/summary/-/'+postLabel+'?alt=json-in-script&callback=totalcountdata&max-results=1" ><\/script>')}}}function redirectpage(numberpage){jsonstart=(numberpage-1)*perPage;noPage=numberpage;var nameBody=document.getElementsByTagName('head')[0];var newInclude=document.createElement('script');newInclude.type='text/javascript';newInclude.setAttribute("src",home_page+"feeds/posts/summary?start-index="+jsonstart+"&max-results=1&alt=json-in-script&callback=finddatepost");nameBody.appendChild(newInclude)}function redirectlabel(numberpage){jsonstart=(numberpage-1)*perPage;noPage=numberpage;var nameBody=document.getElementsByTagName('head')[0];var newInclude=document.createElement('script');newInclude.type='text/javascript';newInclude.setAttribute("src",home_page+"feeds/posts/summary/-/"+postLabel+"?start-index="+jsonstart+"&max-results=1&alt=json-in-script&callback=finddatepost");nameBody.appendChild(newInclude)}function finddatepost(root){post=root.feed.entry[0];var timestamp1=post.published.$t.substring(0,19)+post.published.$t.substring(23,29);var timestamp=encodeURIComponent(timestamp1);if(currentPage=="page"){var pAddress="/search?updated-max="+timestamp+"&max-results="+perPage+"#PageNo="+noPage}else{var pAddress="/search/label/"+postLabel+"?updated-max="+timestamp+"&max-results="+perPage+"#PageNo="+noPage}location.href=pAddress}
  /*]]>*/
</script>
</b:if>
</b:if>

If you have just saved and see the results. If you have not succeeded, also pay attention to the template that you use or place the code