Jika template blog belum terpasang jQuery, silahkan pasang dulu, taruh diatas </head>
Script:
<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.min.js'/>
Pasang script CSS berikut diatas </b:skin>
/* bookmark */
svg.line{width:22px;height:22px;fill:none!important;stroke:#08102b;stroke-linecap:round;stroke-linejoin:round; stroke-width:1}
.pop-area::-webkit-scrollbar{display:none}
.pop-area{display:flex!important;width:100%;height:100%;position:fixed;top:0;left:0;background:rgb(0 0 0 / 51%);visibility:hidden;opacity:0;transition:all 0.25s ease-in-out;z-index:999999;overflow-y:scroll}
.pop-area.open{opacity:1;visibility:visible}
.pop-area .pop-html{background:#fff;padding-bottom:10px;display:block;margin:auto auto;width:calc(100% - 20px);max-width:500px;visibility:hidden;opacity:0;overflow:hidden;transition:all 0.5s ease-in-out;transform:scale(.5);border-radius:7px;box-shadow:0 9px 46px 8px rgba(0,0,0,.14),0 11px 15px -7px rgba(0,0,0,.12),0 24px 38px 3px rgba(0,0,0,.2)}
.pop-area.open .pop-html{opacity:1;transform:scale(1);visibility:visible}
.pop-area .head-pop:after{content:"Bookmark";color:#fefefe;font-weight:bold}
.pop-area .head-pop{width:-webkit-fill-available;padding:12px 30px;overflow:hidden;background:#f89000}
.pop-area .close-btn{float:right;cursor:pointer;fill:#7e7e7e;color:#fefefe;font-weight:bold}
.pop-area .body-content{padding:10px}
.pop-area .text-center{display:grid;text-align:center;grid-gap:15px}
.pop-area .text-center svg{margin:0 auto}
.pop-area .btn.btn-outline-info{width:fit-content;margin:0 auto;text-decoration:none}
.pop-area .table:hover{border-color:#f89000}
.pop-area .table{transition:all .3s;width:100%;border:1px solid rgba(155,155,155,0.15);border-radius:7px;margin:5px 0;padding:5px}
.pop-area .table img{border-radius:4px;width:auto}
.pop-area .table a:hover,.drK .pop-area .table a:hover{color:#f89000}
.pop-area .table a{text-decoration:none;color:#08102b}
.pop-area .img-left{width:150px}
.pop-area .item-left{padding-right:10px}
.pop-area .btn-remove{cursor:pointer}
.show-bookmark{font-size:11px;line-height:18px;padding:0 5px;border-radius:10px;background:#e6e6e6;color:var(--bodyC);position:absolute;top:-5px;right:0;z-index:2}
.pop-area .counterStat{color:white;font-size:16px}
/* css darkmode sesuaikan class (.drK) dengan templatemu agar dapat berfungsi */
.drK .pop-area.open .pop-html,.drK .pop-area .body-content,.drK .pop-area .table a{background-color:#1e1e1e;color:#fefefe}
Taruh script berikut di tempat yang kalian inginkan, header/menu dll.
<div class='buka-tutup'>
<svg class='line' viewBox='0 0 24 24'><g transform='translate(4.500000, 2.500000)'><path d='M7.47024319,0 C1.08324319,0 0.00424318741,0.932 0.00424318741,8.429 C0.00424318741,16.822 -0.152756813,19 1.44324319,19 C3.03824319,19 5.64324319,15.316 7.47024319,15.316 C9.29724319,15.316 11.9022432,19 13.4972432,19 C15.0932432,19 14.9362432,16.822 14.9362432,8.429 C14.9362432,0.932 13.8572432,0 7.47024319,0 Z'></path></g></svg>
<span class='show-bookmark'></span>
</div>
Pasang script ini diatas <data:post.body>
<div class='hartomy-bookmark-btn' data-quantity='1' expr:data-borkimage='resizeImage(data:post.featuredImage, 400, "16:9")' expr:data-id='data:post.id' expr:data-link='data:post.url' expr:data-title='data:post.title'><svg class='line' viewBox='0 0 24 24'><g transform='translate(4.500000, 2.500000)'><path d='M7.47024319,0 C1.08324319,0 0.00424318741,0.932 0.00424318741,8.429 C0.00424318741,16.822 -0.152756813,19 1.44324319,19 C3.03824319,19 5.64324319,15.316 7.47024319,15.316 C9.29724319,15.316 11.9022432,19 13.4972432,19 C15.0932432,19 14.9362432,16.822 14.9362432,8.429 C14.9362432,0.932 13.8572432,0 7.47024319,0 Z'></path><line transform='translate(-4.500000, -2.500000)' x1='12' x2='12' y1='6' y2='12'></line><line transform='translate(-4.500000, -2.500000)' x1='15' x2='9' y1='9' y2='9'></line></g></svg>
</div>
Pasang javascript berikut diatas </body>
<script>//<![CDATA[
// source code : https://www.hartomy.com/2020/09/cara-membuat-tombol-bookmark-di-blogger.html
var massgEmpty="Daftar Artikel Favorit Belum Ada",articleLabel="Semua konten",link_articleLabel="https://www.wendycode.com/search";!function($){"use strict";var OptionManager=(objToReturn={},defaultOptions={bookmarkIcon:"bookmarkIcon",bookmarkBadge:"show-bookmark",articleQuantity:"article-quantity",affixBookmarkIcon:!0,showBookmarkModal:!0,clickOnAddToBookmark:function(t){},clickOnbookmarkIcon:function(t,e){}},objToReturn.getOptions=function(t){var e=$.extend({},defaultOptions);return"object"==typeof t&&$.extend(e,t),e},objToReturn),objToReturn,defaultOptions,articleManager=function(){var t={};localStorage.konten=localStorage.konten?localStorage.konten:"";var e=function(t){localStorage.konten=JSON.stringify(t)},a=function(){try{return JSON.parse(localStorage.konten)}catch(t){return[]}},o=function(t,o){var n=function(t){var e=-1,o=a();return $.each(o,function(a,o){o.id!=t||(e=a)}),e}(t);if(n<0)return!1;var r=a();return r[n].quantity=void 0===o?r[n].quantity:o,e(r),!0};return t.getAllkonten=a,t.updatePoduct=o,t.setarticle=function(t,n,r,i,c,l){return void 0===t?(console.error("id required"),!1):void 0===n?(console.error("title required"),!1):void 0===r?(console.error("link required"),!1):void 0===l?(console.error("borkimage required"),!1):(i=void 0===i?"":i,void(o(t)||function(t,o,n,r,i,c){var l=a();l.push({id:t,title:o,link:n,summary:r,quantity:i,borkimage:c}),e(l)}(t,n,r,i,c,l)))},t.cleararticle=function(){e([])},t.removearticle=function(t){var o=a();o=$.grep(o,function(e,a){return e.id!=t}),e(o)},t.getTotalQuantity=function(){var t=0,e=a();return $.each(e,function(e,a){t+=a.quantity}),t},t}(),loadBookmarkEvent=function(t){var e=OptionManager.getOptions(t),a=$("."+e.bookmarkIcon),o=$("."+e.bookmarkBadge),n=e.articleQuantity;o.text(articleManager.getTotalQuantity()),$("#cart-modal").length||$("body").append('<div class="pop-area" id="cart-modal"><div class="pop-html"><div class="head-pop"><a class="close-btn buka-tutup">X</a></div><div class="body-content"><span class="table-responsive" id="cart-table"></span></div></div></div>');var r=function(){var t=$("#cart-table");t.empty();var e=articleManager.getAllkonten();$.each(e,function(){t.append('<table class="table"><tbody><tr title="'+this.summary+'" data-id="'+this.id+'"><td class="item-left img-left"><img width="60px" height="60px" src="'+this.borkimage+'"/></td><td class="item-left"><a href="'+this.link+'">'+this.title+'</a></td><td class="item-left" title="Remove favorit" class="text-center" style="width: 30px;"><a class="btn-remove"><svg class="line" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><g transform="translate(3.500000, 2.000000)"><path d="M15.3891429,7.55409524 C15.3891429,15.5731429 16.5434286,19.1979048 8.77961905,19.1979048 C1.01485714,19.1979048 2.19295238,15.5731429 2.19295238,7.55409524"></path><line x1="16.8651429" y1="4.47980952" x2="0.714666667" y2="4.47980952"></line><path d="M12.2148571,4.47980952 C12.2148571,4.47980952 12.7434286,0.714095238 8.78914286,0.714095238 C4.83580952,0.714095238 5.36438095,4.47980952 5.36438095,4.47980952"></path></g></svg></a></td></tr></tbody></table>')}),t.append(e.length?"":'<div role="alert" id="cart-empty-message"><div class="text-center"><svg width="80" height="80" viewBox="0 0 24 24"><path d="M19,2L14,6.5V17.5L19,13V2M6.5,5C4.55,5 2.45,5.4 1,6.5V21.16C1,21.41 1.25,21.66 1.5,21.66C1.6,21.66 1.65,21.59 1.75,21.59C3.1,20.94 5.05,20.5 6.5,20.5C8.45,20.5 10.55,20.9 12,22C13.35,21.15 15.8,20.5 17.5,20.5C19.15,20.5 20.85,20.81 22.25,21.56C22.35,21.61 22.4,21.59 22.5,21.59C22.75,21.59 23,21.34 23,21.09V6.5C22.4,6.05 21.75,5.75 21,5.5V7.5L21,13V19C19.9,18.65 18.7,18.5 17.5,18.5C15.8,18.5 13.35,19.15 12,20V13L12,8.5V6.5C10.55,5.4 8.45,5 6.5,5V5Z" fill="#f89000"/></svg><center>'+massgEmpty+'</center><a class="btn btn-outline-info m-2" href="'+link_articleLabel+'">'+articleLabel+"</a></div></div>")};if(e.affixBookmarkIcon){var i=1*a.offset().top+1*a.css("height").match(/\d+/);$(window).scroll(function(){$(window).scrollTop()>=i?a.addClass("bookmarkIcon-affix"):a.removeClass("bookmarkIcon-affix")})}a.click(function(){e.showBookmarkModal?r():e.clickOnbookmarkIcon(a,articleManager.getAllkonten())}),$(document).on("keypress","."+n,function(t){38!=t.keyCode&&40!=t.keyCode&&t.preventDefault()}),$(document).on({click:function(){var t=$(this).closest("tr"),e=t.data("id");t.hide(500,function(){articleManager.removearticle(e),r(),o.text(articleManager.getTotalQuantity())})}},".btn-remove")};$(document).on({click:function(){return $(".pop-area").toggleClass("open"),!1}},".buka-tutup"),$(function(){var goTohartomyBookmark=function(t){};eval(function(t,e,a,o,n,r){if(n=function(t){return(t<58?"":n(parseInt(t/58)))+((t%=58)>35?String.fromCharCode(t+29):t.toString(36))},!"".replace(/^/,String)){for(;a--;)r[n(a)]=o[a]||n(a);o=[function(t){return r[t]}],n=function(){return"\\w+"},a=1}for(;a--;)o[a]&&(t=t.replace(new RegExp("\\b"+n(a)+"\\b","g"),o[a]));return t}('q h=["\\B\\e\\M","\\g\\r\\k\\E\\i\\v\\l\\l\\w\\m\\n\\e\\e\\f\\j\\g\\i\\f","\\x\\y\\f\\g\\C\\k\\y\\k\\y\\F","\\N\\z\\g\\i\\k\\e\\j\\G\\C\\x\\e\\e\\f\\j\\g\\i\\f\\C\\x\\k\\m","\\H\\z\\A\\r\\k","\\F\\y\\H\\z","\\s\\t\\s","\\s\\t\\O","\\s\\t\\P","\\z\\g\\i\\k\\e\\j\\G\\n\\e\\e\\f\\j\\g\\i\\f","\\s\\t\\Q"];q D=[h[0],h[1],h[2],h[3]];(o(b,c){q d=o(a){R(--a){b[h[5]](b[h[4]]())}};d(++c)}(D,S));q u=o(a,b){a=a-I;q c=D[a];T c};$(u(h[U]))[h[9]]({\'\\x\\e\\e\\f\\j\\g\\i\\f\\J\\p\\e\\m\':u(h[6]),\'\\g\\r\\r\\A\\t\\n\\e\\e\\f\\j\\g\\i\\f\\J\\p\\e\\m\':!I,\'\\p\\B\\A\\p\\f\\w\\m\\v\\l\\l\\K\\e\\n\\e\\e\\f\\j\\g\\i\\f\':o(a){L(a)},\'\\g\\r\\k\\E\\i\\v\\l\\l\\w\\m\\n\\e\\e\\f\\j\\g\\i\\f\':o(a){V[u(h[8])](u(h[7]),a)},\'\\p\\B\\A\\p\\f\\w\\m\\v\\l\\l\\K\\e\\n\\e\\e\\f\\j\\g\\i\\f\':o(a){L(a)}})',0,58,"||||||||||||||x6F|x6B|x61|_0x6a0a|x72|x6D|x74|x64|x6E|x42|function|x63|var|x66|x30|x78|_0x3889|x41|x4F|x62|x75|x68|x69|x6C|x2D|_0x4117|x65|x70|x79|x73|0x0|x49|x54|goTohartomyBookmark|x67|x2E|x33|x32|x31|while|0xd6|return|10|console".split("|"),0,{}))});var MyBookmark=function(t,e){var a=$(t),o=OptionManager.getOptions(e),n=$("."+o.bookmarkBadge);a.click(function(){o.clickOnAddToBookmark(a);var t=a.data("id"),e=a.data("title"),r=a.data("link"),i=a.data("summary"),c=a.data("quantity"),l=a.data("borkimage");articleManager.setarticle(t,e,r,i,c,l),n.text(articleManager.getTotalQuantity())})};$.fn.hartomyBookmark=function(t){return loadBookmarkEvent(t),$.each(this,function(){new MyBookmark(this,t)})}}(jQuery);
//]]></script>