Artikel ini membahas tentang awal mula konsep hukum Archimedes dan contohnya dalam kehidupan sehari-hari
—
Bayangkan kamu adalah raja.
Sebagaimana seorang raja pada umumnya, kamu tinggal di kerajaan. Lengkap dengan semua perlengkapan kerajaan. Satu-satunya hal yang membuatmu kurang adalah mahkota. Tidak ada benda indah itu di kepalamu. Dan sebagaimana seorang raja pada umumnya, kamu menginginkannya.
Maka, kamu memanggil tukang emas.
Mari kita sebut tukang emas ini dengan Widodo Sergero. Sergero datang ke istana, lalu bertanya tentang bentuk mahkota yang kamu inginkan, serta bahan dasarnya pembuatannya.
Kamu berseru, “Puoko’e emas puwoll!!”
Ini ceritanya raja dari jawa. (LAH TERUS KENAPA WIDODO DIGANTI NAMA JADI SERGERO, BAMBANG!).
Intinya, kamu ingin dibuatkan satu mahkota, yang terbuat dari emas murni 100%.
Sergero pun menyanggupi. Ia pulang, dan, beberapa hari kemudian menyambangi istana sambil membawa mahkota ciptaannya.
Bukannya senang karena keinginanmu terkabul, kamu malah merasa ada yang janggal.
Jika dilihat, mahkota itu memang tampak biasa. Bentuknya persis seperti yang kamu minta. Tapi, begitu kamu angkat, kok terasa lebih ringan dari seharusnya? Kamu pun mulai ragu pada Sergero. “Jangan-jangan aku ditipu,” begitu pikirmu.
“Jangan-jangan ini enteng karena bukan terbuat dari emas murni? Jangan-jangan Sergero mengoplos mahkota ini! Emasnya 20%, sisanya pake tepung kanji!”
Persoalannya, kamu tidak benar-benar bisa membuktikan kecurigaanmu. Akhirnya, kamu mengutus pengawal untuk mencari orang pintar di penjuru kota. Didapatlah seseorang bernama Archimedes.
Ngomong-ngomong, keren juga ya orang zaman dulu. Kalau sekarang kita punya masalah dan ngomong ke saudara, ‘Tolong carikan aku orang pintar!’ paling-paling yang dateng Ki Joko Bodo…
Jadilah kamu minta Archimedes untuk membuktikan keaslian mahkota tersebut.
Cerita ini kita hentikan dulu sampai sini.
Dan mari kita pindah ke sudut pandang Archimedes.
Archimedes adalah seorang pemikir dewa. Pada saat raja minta membuktikan mahkota, ia sudah tahu konsep massa jenis. Sebentar, deh. Ngomong-ngomong kamu udah tahu belum konsep dari massa jenis?
Gini deh. Coba jawab pertanyaan ini.
—
Kalau kamu sudah paham konsep massa dan berat, kamu pasti bakal ngomong dengan mudah, “Ya sama lah! Orang sama-sama 50 kg!”.
Ya, jawaban kamu benar.
Sekarang, coba, deh, bayangkan ukuran 50 kg kapas dan 50 kg baja. Meski sama-sama memiliki massa 50 kg, keduanya punya ukuran yang jauh berbeda. 50 kg baja mungkin hanya berukuran sebesar badan kamu. Tapi, 50 kg kapas bisa saja sebesar mobil avanza.
Hal ini lah yang dimaksud dengan massa jenis.
Massa per satuan volume.
Massa per satuan volume baja lebih tinggi, makanya volumenya jauh lebih kecil dibanding kapas.
Sekarang, mari kembali ke kerajaan.
Dengan konsep massa jenis ini, berarti Archimedes tinggal membandingkan massa per satuan volume dari emas murni dengan mahkota yang telah jadi.
Caranya, cari emas asli, lalu timbang hingga massa-nya sama dengan massa mahkota. Gimana tuh nimbangnya? Ya, timbang aja pakai timbangan neraca. Kalau seimbang, artinya berat keduanya sama, kan.
Selanjutnya, cari tahu, deh, apakah volume emas asli itu sama dengan volume mahkota.
Masalahnya, bentuk mahkotanya aneh.
Mahkota yang kamu inginkan punya bentuk yang tidak beraturan. Dengan begitu, kita tidak bisa seenaknya menghitung volume dengan mengukur seperti menghitung volume tabung, misalnya. Bisa aja, sih, dengan membakar keduanya (emas gelonggongan murni dan mahkota) hingga melebur jadi cairan. Tapi, kamu pasti bakalan ngamuk. Niat kamu, kan, menggunakan mahkota sebagai penanda pemilik istana. Kalau mahkotanya udah cair, bentuknya aneh dong.
Harus pake cara lain, nih. Gimana ya?
Apapun pilihan kamu, Archimedes tidak melakukannya (ya iyalah!). Archimedes memilih untuk “menyerah” sebentar. Ia pun pulang dan minta izin untuk “berpikir”. Sebagai seorang pemikir ulung, ia pasti membawa masalah ini ke mana-mana. Sambil makan dia memikirkan cara menghitung volume. Sampai sorenya, dia masuk ke bath tub untuk mandi… lalu menyadari sesuatu.
Kok pas aku masuk, air di bak naik ya?
Dia lalu keluar dari bak mandi.
Airnya berkurang lagi.
Dia masuk lagi, airnya naik lagi.
Dia pun hening 2 menitan, lalu menjerit, ‘EUREKA!’ sambil lari-lari kegirangan karena mendapat jawaban dari volume tadi.
Ternyata, Archimedes sadar bahwa volume air yang “bertambah” saat ia masuk ke dalam bak mandi, setara dengan volume dirinya sendiri. Itu artinya, untuk mengetahui berapa volume mahkota, tinggal masukkan aja kedua emas tadi di dalam air. Kalau penambahan volume airnya sama, artinya emas yang digunakan di mahkota adalah emas murni 100%.
Sumber: deltastep via YouTube
Jadi, mari kita semua berterima kasih kepada… tukang bath tub. Karena keberadaannya lah yang membuat ditemukannya Hukum Archimedes. Bayangin aja kalo Archimedes mandi pake shower kayak kita semua. Yang ada, bukannya nemuin konsep baru, dia malah nangis, galau sambil bilang, “Kenapa… kenapa aku… Kenapa…”
Nah, itu dia cerita di balik hukum Archimedes dan konsep fluidanya. Dari hukum “eureka”-nya, dia jadi bisa membuat rumus gaya angkat seperti itu. Konsep tersebut yang kemudian digunakan untuk pembuatan perahu, kapal selam, dan banyak lainnya. Sebenarnya, sih, cerita ini belum tentu terjamin kebenarannya. Soalnya, udah lamaaa banget. Tapi, paling tidak bisa kamu pakai untuk menggambarkan hukum Archimedes dan jadi ngerti banget kan?
Gimana? Sekarang sudah tahu, kan, bagaimana hukum Archimedes bisa tercipta. Kalau kamu udah paham konsepnya, sisanya tinggal latihan soal aja deh untuk memperkuat dan lebih mantab lagi di rumus tersebut. Kamu bisa coba pakai ruanguji di aplikasi Ruangguru untuk latihan-latihan soalnya yaa!
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<h1 class="content-title">
Penjelasan Lengkap Hukum Archimedes dan Cerita Mahkota Raja | Fisika Kelas 8 </h1>
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<p class="content-author"><a href="https://www.ruangguru.com/blog/author/kresnoadi" class="">Kresnoadi</a> </p>
<p class="content-info"><span>August 5, 2019 • </span> <span>5 minutes read</span></p>
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<p style="text-align: center;"><img decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/materi%20hukum%20archimedes%20kelas%208%20smp.png" alt="materi hukum archimedes kelas 8 smp" width="820" style="width: 820px; margin: 0px auto;"></p>
<p><em>Artikel ini membahas tentang awal mula konsep hukum Archimedes dan contohnya dalam kehidupan sehari-hari</em></p>
<p><span id="more-7900"></span></p>
<p style="text-align: center;">—</p>
<p style="text-align: justify;">Bayangkan kamu adalah raja.</p>
<p style="text-align: justify;">Sebagaimana seorang raja pada umumnya, kamu tinggal di kerajaan. Lengkap dengan semua perlengkapan kerajaan. Satu-satunya hal yang membuatmu kurang adalah mahkota. Tidak ada benda indah itu di kepalamu. Dan sebagaimana seorang raja pada umumnya, kamu menginginkannya.</p>
<p style="text-align: justify;">Maka, kamu memanggil tukang emas.</p>
<p style="text-align: justify;">Mari kita sebut tukang emas ini dengan <span style="text-decoration: line-through;">Widodo</span> Sergero. Sergero datang ke istana, lalu bertanya tentang bentuk mahkota yang kamu inginkan, serta bahan dasarnya pembuatannya.</p>
<p style="text-align: justify;">Kamu berseru, “<em>Puoko’e emas puwoll!!” </em></p>
<p style="text-align: justify;">Ini ceritanya raja dari jawa. (<em>LAH TERUS KENAPA WIDODO DIGANTI NAMA JADI SERGERO, BAMBANG!</em>).</p>
<p style="text-align: justify;">Intinya, kamu ingin dibuatkan satu mahkota, yang terbuat dari emas murni 100%.</p>
<p style="text-align: justify;">Sergero pun menyanggupi. Ia pulang, dan, beberapa hari kemudian menyambangi istana sambil membawa mahkota ciptaannya.</p>
<p style="text-align: justify;">Bukannya senang karena keinginanmu terkabul, kamu malah merasa ada yang janggal.</p>
<p style="text-align: justify;">Jika dilihat, mahkota itu memang tampak biasa. Bentuknya persis seperti yang kamu minta. Tapi, begitu kamu angkat, kok <em>terasa lebih ringan dari seharusnya?</em> Kamu pun mulai ragu pada Sergero. “Jangan-jangan aku ditipu,” begitu pikirmu.</p>
<p style="text-align: justify;">“Jangan-jangan ini enteng karena bukan terbuat dari emas murni? Jangan-jangan Sergero mengoplos mahkota ini! Emasnya 20%, sisanya pake tepung kanji!”</p>
<p style="text-align: justify;">Persoalannya, kamu tidak benar-benar bisa membuktikan kecurigaanmu. Akhirnya, kamu mengutus pengawal untuk mencari orang pintar di penjuru kota. Didapatlah seseorang bernama Archimedes.</p>
<p style="text-align: justify;">Ngomong-ngomong, keren juga ya orang zaman dulu. Kalau sekarang kita punya masalah dan ngomong ke saudara, ‘Tolong carikan aku orang pintar!’ paling-paling yang dateng Ki Joko Bodo…</p>
<p style="text-align: justify;">Jadilah kamu minta Archimedes untuk membuktikan keaslian mahkota tersebut.</p>
<p style="text-align: justify;">Cerita ini kita hentikan dulu sampai sini.</p>
<p style="text-align: justify;">Dan mari kita pindah ke sudut pandang Archimedes.</p>
<p><img decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/archimedes%20dan%20massa%20jenis-1.png" alt="archimedes dan massa jenis-1" width="820" style="width: 820px; display: block; margin: 0px auto;"></p>
<p style="text-align: justify;">Archimedes adalah seorang pemikir dewa. Pada saat raja minta membuktikan mahkota, ia sudah tahu konsep massa jenis. Sebentar, deh. Ngomong-ngomong kamu udah tahu belum konsep dari massa jenis?</p>
<p style="text-align: justify;">Gini deh. Coba jawab pertanyaan ini.</p>
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<p style="color: #c9c8cd; font-family: Arial,sans-serif; font-size: 14px; line-height: 17px; margin-bottom: 0; margin-top: 8px; overflow: hidden; padding: 8px 0 7px; text-align: center; text-overflow: ellipsis; white-space: nowrap;"><a href="https://www.instagram.com/p/BpRRI_jFnK6/" style="color: #c9c8cd; font-family: Arial,sans-serif; font-size: 14px; font-style: normal; font-weight: normal; line-height: 17px; text-decoration: none;" target="_blank" rel="noopener">A post shared by Ruangguru | Bimbel Online No 1 (@ruangguru)</a> on <time style="font-family: Arial,sans-serif; font-size: 14px; line-height: 17px;" datetime="2018-10-23T09:00:16+00:00">Oct 23, 2018 at 2:00am PDT</time></p>
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<p style="text-align: center;">—</p>
<p style="text-align: justify;">Kalau kamu sudah paham konsep massa dan berat, kamu pasti bakal ngomong dengan mudah, “Ya sama lah! Orang sama-sama 50 kg!”.</p>
<p style="text-align: justify;">Ya, jawaban kamu benar.</p>
<p style="text-align: justify;">Sekarang, coba, deh, bayangkan ukuran 50 kg kapas dan 50 kg baja. Meski sama-sama memiliki massa 50 kg, keduanya punya ukuran yang jauh berbeda. 50 kg baja mungkin hanya berukuran sebesar badan kamu. Tapi, 50 kg kapas bisa saja sebesar mobil avanza.</p>
<p style="text-align: justify;">Hal ini lah yang dimaksud dengan massa jenis.</p>
<h2 style="text-align: justify;"><strong><em>Massa per satuan volume.</em></strong></h2>
<p style="text-align: justify;">Massa per satuan volume baja lebih tinggi, makanya volumenya jauh lebih kecil dibanding kapas.</p>
<p><img decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/rumus%20massa%20jenis-1.png" alt="rumus massa jenis-1" width="600" style="width: 600px; display: block; margin: 0px auto;"></p>
<p style="text-align: justify;">Sekarang, mari kembali ke kerajaan.</p>
<p style="text-align: justify;">Dengan konsep massa jenis ini, berarti Archimedes tinggal membandingkan massa per satuan volume dari emas murni dengan mahkota yang telah jadi.</p>
<h3 style="text-align: justify;"><strong>Baca juga: <a href="/sejarah-hukum-pascal" rel="noopener" target="_blank">Asal-usul, Sejarah, dan Penerapan Hukum Pascal dalam Kehidupan Sehari-hari</a></strong></h3>
<p style="text-align: justify;">Caranya, cari emas asli, lalu timbang hingga massa-nya sama dengan massa mahkota. Gimana tuh nimbangnya? Ya, timbang aja pakai timbangan neraca. Kalau seimbang, artinya berat keduanya sama, kan.</p>
<p style="text-align: justify;">Selanjutnya, cari tahu, deh, apakah volume emas asli itu sama dengan volume mahkota.</p>
<p style="text-align: justify;">Masalahnya, bentuk mahkotanya aneh.</p>
<p style="text-align: justify;">Mahkota yang kamu inginkan punya bentuk yang tidak beraturan. Dengan begitu, kita tidak bisa seenaknya menghitung volume dengan mengukur seperti <a href="/cara-menghitung-volume-dan-luas-permukaan-tabung" rel="noopener" target="_blank"><strong>menghitung volume tabung</strong></a>, misalnya. Bisa <em>aja</em>, sih, dengan membakar keduanya (emas gelonggongan murni dan mahkota) hingga melebur jadi cairan. Tapi, kamu pasti <em>bakalan</em> <em>ngamuk</em>. Niat kamu, <em>kan</em>, menggunakan mahkota sebagai penanda pemilik istana. Kalau mahkotanya udah cair, bentuknya aneh dong.</p>
<p style="text-align: justify;">Harus pake cara lain, <em>nih</em>. Gimana ya?</p>
<p style="text-align: justify;">
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<div class="playbuzz" data-id="9e842d35-db86-4317-8dde-d295510f8156" data-show-share="false" data-show-info="false"><img decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/cara%20menimbang%20emas%20dalam%20cerita%20archimedes.png" alt="cara menimbang emas dalam cerita archimedes" width="600" style="width: 600px; display: block; margin: 0px auto;"></div>
<p style="text-align: justify;">Apapun pilihan kamu, Archimedes tidak melakukannya <em>(ya iyalah!)</em>. Archimedes memilih untuk “menyerah” sebentar. Ia pun pulang dan minta izin untuk “berpikir”. Sebagai seorang pemikir ulung, ia pasti membawa masalah ini ke mana-mana. Sambil makan dia memikirkan cara menghitung volume. Sampai sorenya, dia masuk ke <em>bath tub</em> untuk mandi… lalu menyadari sesuatu.</p>
<p style="text-align: justify;"><em>Kok pas aku masuk, air di bak naik ya?</em></p>
<p style="text-align: justify;">Dia lalu keluar dari bak mandi.</p>
<p style="text-align: justify;">Airnya berkurang lagi.</p>
<p style="text-align: justify;">Dia masuk lagi, airnya naik lagi.</p>
<p style="text-align: justify;">Dia pun hening 2 menitan, lalu menjerit, ‘EUREKA!’ sambil lari-lari kegirangan karena mendapat jawaban dari volume tadi.</p>
<p><img decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/hukum%20archimedes.png" alt="hukum archimedes" width="600" style="width: 600px; display: block; margin: 0px auto;"></p>
<p style="text-align: justify;">Ternyata, Archimedes sadar bahwa volume air yang “bertambah” saat ia masuk ke dalam bak mandi, setara dengan volume dirinya sendiri. Itu artinya, untuk mengetahui berapa volume mahkota, tinggal masukkan aja kedua emas tadi di dalam air. Kalau penambahan volume airnya sama, artinya emas yang digunakan di mahkota adalah emas murni 100%.</p>
<p style="text-align: center;"><img decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/sejarah%20hukum%20archimedes.gif" alt="sejarah hukum archimedes" width="480" style="width: 480px; display: block; margin: 0px auto;">Sumber: deltastep via YouTube</p>
<p style="text-align: justify;">Jadi, mari kita semua berterima kasih kepada… <em>tukang bath tub.</em> Karena keberadaannya lah yang membuat ditemukannya Hukum Archimedes. <em>Bayangin aja</em> kalo Archimedes mandi pake <em>shower</em> kayak kita semua. Yang ada, bukannya nemuin konsep baru, dia malah nangis, <em>galau</em> sambil bilang, “Kenapa… kenapa aku… Kenapa…”</p>
<p style="text-align: justify;"><em>Nah</em>, itu dia cerita di balik hukum Archimedes dan konsep fluidanya. Dari hukum “eureka”-nya, dia jadi bisa membuat rumus gaya angkat seperti itu. Konsep tersebut yang kemudian digunakan untuk pembuatan perahu, kapal selam, dan banyak lainnya. Sebenarnya, <em>sih</em>, cerita ini belum tentu terjamin kebenarannya. Soalnya, udah lamaaa banget. Tapi, paling tidak bisa kamu pakai untuk menggambarkan hukum Archimedes dan jadi ngerti banget kan?</p>
<p style="text-align: justify;">Gimana? Sekarang sudah tahu, kan, bagaimana hukum Archimedes bisa tercipta. Kalau kamu udah paham konsepnya, sisanya tinggal latihan soal <em>aja deh</em> untuk memperkuat dan lebih <em>mantab</em> lagi di rumus tersebut. Kamu bisa coba pakai <a href="https://ruangguru.onelink.me/blPk/3b1dd5cf" rel="noopener" target="_blank"><strong>ruanguji </strong></a>di aplikasi Ruangguru untuk latihan-latihan soalnya yaa!</p>
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<div class="d-lg-none text-center">
<nav class="footer-menu social">
<p class="title">Ikuti Kami</p>
<a target="_blank" href="https://www.instagram.com/ruangguru/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/instagram.png?height=60&convert=webp" type="image/webp">
<source srcset="https://cdn-web-2.ruangguru.com/static/instagram.png?height=60" type="image/png">
<img src="https://cdn-web-2.ruangguru.com/static/instagram.png" loading="lazy" alt="Logo Instagram Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.facebook.com/ruanggurucom/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/facebook.png?height=60&convert=webp" type="image/webp">
<source srcset="https://cdn-web-2.ruangguru.com/static/facebook.png?height=60" type="image/png">
<img src="https://cdn-web-2.ruangguru.com/static/facebook.png" loading="lazy" alt="Logo Facebook Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://twitter.com/ruangguru/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/twitter.png?height=60&convert=webp" type="image/webp">
<source srcset="https://cdn-web-2.ruangguru.com/static/twitter.png?height=60" type="image/png">
<img src="https://cdn-web-2.ruangguru.com/static/twitter.png" loading=" lazy" alt="Logo Twitter Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.youtube.com/ruangguru">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/youtube.png?height=60&convert=webp" type="image/webp">
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<img src="https://cdn-web-2.ruangguru.com/static/youtube.png" loading=" lazy" alt="Logo Youtube Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.linkedin.com/company/ruangguru-com">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/linkedin.png?height=60&convert=webp" type="image/webp">
<source srcset="https://cdn-web-2.ruangguru.com/static/linkedin.png?height=60" type="image/png">
<img src="https://cdn-web-2.ruangguru.com/static/linkedin.png" loading=" lazy" alt="Logo LinkedIn Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.tiktok.com/@ruangguru">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/tiktok.png?height=60&convert=webp" type="image/webp">
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<img src="https://cdn-web-2.ruangguru.com/static/tiktok.png" loading=" lazy" alt="Logo TikTok Footer" width="32px" height="32px" />
</picture>
</a>
</nav>
</div>
<p class="footer-copyright">
© 2026 All Rights Reserved PT. Ruang Raya Indonesia
</p>
</div>
<style>
.bantuan-container {
position: relative;
}
.bantuan-element {
position: fixed;
z-index: 999;
display: flex;
align-items: flex-end;
justify-content: flex-end;
cursor: pointer;
transition: all 0.6s ease;
}
.bantuan-top {
bottom: 11rem;
right: 2rem;
}
.bantuan-bottom {
bottom: 2rem;
right: 2rem;
}
.bantuan-top-2 {
bottom: 15rem;
right: 2rem;
}
.bantuan-top-3 {
bottom: 19rem;
right: 2rem;
}
.bantuan-bottom-2 {
bottom: 5rem;
right: 2rem;
}
.bantuan-bottom-3 {
bottom: 8rem;
right: 2rem;
}
@media (min-width: 768px) {
.bantuan-element img {
width: auto;
transition: all 0.4s ease;
}
.bantuan-top img {
width: 140px;
}
.bantuan-bottom img {
width: 140px;
}
.bantuan-top-2 img,
.bantuan-top-3 img {
width: 140px;
}
.bantuan-bottom-2 img,
.bantuan-bottom-3 img {
width: 140px;
}
.bantuan-element.clicked {
bottom: 9rem;
right: 2.5rem;
}
.bantuan-element.clicked img {
width: auto;
height: 64px;
}
}
@media (max-width: 767px) {
.bantuan-top {
bottom: 8rem;
right: 1rem;
align-items: center;
}
.bantuan-bottom {
bottom: 2rem;
right: 1.25rem;
align-items: center;
}
.bantuan-top-2 {
bottom: 12rem;
right: 1rem;
align-items: center;
}
.bantuan-top-3 {
bottom: 16rem;
right: 1rem;
align-items: center;
}
.bantuan-bottom-2 {
bottom: 5rem;
right: 1.25rem;
align-items: center;
}
.bantuan-bottom-3 {
bottom: 8rem;
right: 1.25rem;
align-items: center;
}
.bantuan-element img {
width: auto;
}
.bantuan-top img,
.bantuan-top-2 img,
.bantuan-top-3 img {
width: 96px;
}
.bantuan-bottom img,
.bantuan-bottom-2 img,
.bantuan-bottom-3 img {
width: 96px;
}
}
.bantuan-element:hover {
transform: scale(1.05);
}
.bantuan-element img {
max-width: 100%;
height: auto;
}
</style>
<div id="bantuan-divs-container" style="position: relative" data-product="ruangguru" data-table="rg_floating_icon"></div>
<script>
class FloatingDivsComponent {
constructor(product = 'ruangguru', table = 'rg_floating_icon') {
this.container = document.getElementById('bantuan-divs-container');
this.floatingElements = [];
this.product = product;
this.table = table;
// Configuration
this.config = {
baseApiUrl: 'https://gw.ruangguru.com/api/v3/rdb/p_ddgy8hjx5dxsqx/rg_banner/views/',
apiKey: 'vLyK3dJrDBRmOwueX2OJXibMkgsUbBk0WS4ua2p1',
maxElements: 2,
zIndexBase: 100,
};
// Build dynamic API URL based on table parameter
this.config.apiUrl = this.buildApiUrl();
this.init();
}
buildApiUrl() {
const baseUrl = this.config.baseApiUrl;
const tableName = this.table || 'rg_floating_icon';
const queryParams =
'offset=0&limit=99999&sort=rankPosition&where=(type,eq,floating)~and(showIn,anyof,blog)~and(hide,is,false)~and(product,eq,' +
this.product +
')&nested%5Bcta%5D%5Bfields%5D=Id,name,ctaId,imageUrl,ctaLink,targetUrl';
return `${baseUrl}${tableName}?${queryParams}`;
}
async init() {
try {
await this.fetchFloatingElements();
this.renderFloatingElements();
} catch (error) {
console.error('Failed to initialize floating divs component:', error);
}
}
async fetchFloatingElements() {
try {
const options = {
method: 'GET',
headers: {
'xc-token': this.config.apiKey || 'vLyK3dJrDBRmOwueX2OJXibMkgsUbBk0WS4ua2p1',
},
};
const urlNoco = this.config.apiUrl;
const response = await fetch(urlNoco, options);
if (!response.ok) {
throw new Error(`HTTP error! status: ${response.status}`);
}
const data = await response.json();
this.floatingElements = this.processApiResponse(data);
} catch (error) {
console.error('Error fetching floating elements:', error);
throw error;
}
}
processApiResponse(data) {
if (!data || !data.list || !Array.isArray(data.list)) {
return [];
}
console.log(data.list);
// Ensure we only get maximum 2 elements
const limitedElements = data.list.slice(0, this.config.maxElements);
return limitedElements;
}
renderFloatingElements() {
if (!this.container || this.floatingElements.length === 0) {
return;
}
// Additional safeguard: ensure we never render more than maxElements
const elementsToRender = this.floatingElements.slice(0, this.config.maxElements);
// Clean up existing elements and their event listeners
this.cleanupExistingElements();
// Clear existing content
this.container.innerHTML = '';
elementsToRender.forEach((element, index) => {
const floatingDiv = this.createFloatingDiv(element, index);
this.container.appendChild(floatingDiv);
});
}
cleanupExistingElements() {
// Clear existing elements (no need for event listener cleanup with CSS approach)
const existingElements = this.container.querySelectorAll('[data-floating-element]');
existingElements.forEach(element => {
element.remove();
});
}
createFloatingDiv(element, index) {
const div = document.createElement('div');
const cta = element.cta[0]; // Use the first CTA
// Add data attribute for cleanup tracking
div.setAttribute('data-floating-element', 'true');
// Apply CSS classes based on rankPosition
const positionClass = this.getPositionClass(element.rankPosition, index);
div.className = `bantuan-element ${positionClass}`;
div.style.zIndex = this.config.zIndexBase + index;
// Create the link and image
const link = document.createElement('a');
link.href = 'https://cta.ruangguru.com/' + cta.ctaId || '#';
link.target = '_blank';
// Add tracking attributes
link.setAttribute('data-tracking-event-type', 'landing_page__core__item_click');
link.setAttribute(
'data-tracking-context',
JSON.stringify({
product_name: this.product,
cta_action: 'redirection',
cta_action_detail: link.href,
item_type: 'floating',
item_name: element.name || 'Floating element',
item_category: 'payment',
item_position: index,
item_serial: null,
section_type: 'floating_item',
section_position: 'body',
section_name: 'floating_item',
})
);
const img = document.createElement('img');
img.src = element.imageUrl + '?h=200&convert=webp';
img.alt = element.name || 'Floating element';
img.loading = 'lazy';
// Add click tracking
link.addEventListener('click', () => {
this.trackClick(element, cta);
});
link.appendChild(img);
div.appendChild(link);
return div;
}
getPositionClass(rankPosition, index) {
// Define positioning classes based on rankPosition
if (rankPosition === 1) {
return 'bantuan-top'; // Top position
} else if (rankPosition === 2) {
return 'bantuan-bottom'; // Bottom position
} else {
// For additional elements, distribute them evenly
return `bantuan-${index % 2 === 0 ? 'top' : 'bottom'}-${Math.floor(index / 2) + 1}`;
}
}
trackClick(element, cta) {
// Implement click tracking logic here
console.log('Floating element clicked:', {
elementId: element.Id,
elementName: cta.name,
ctaId: cta.ctaId,
targetUrl: cta.targetUrl,
});
}
// Public method to manually refresh
async refresh() {
try {
await this.fetchFloatingElements();
this.renderFloatingElements();
} catch (error) {
console.error('Failed to refresh floating elements:', error);
throw error;
}
}
// Public method to get current floating elements
getFloatingElements() {
return [...this.floatingElements];
}
}
// Initialize the component when DOM is ready
document.addEventListener('DOMContentLoaded', () => {
// Get product and table parameters from data attributes
const container = document.getElementById('bantuan-divs-container');
const product = container.getAttribute('data-product') || 'ruangguru';
const table = container.getAttribute('data-table') || 'rg_floating_icon';
new FloatingDivsComponent(product, table);
});
// Export for use in other modules if needed
if (typeof module !== 'undefined' && module.exports) {
module.exports = FloatingDivsComponent;
}
</script> <div id="wp-install-nudge" style="
position: fixed;
bottom: 0rem;
right: 0;
z-index: 999;
cursor: pointer;
"></div>
<script>
(function (w, d, s, o, f, js, fjs) {
w['Sales-Nudge-Widget'] = o; w[o] = w[o] || function () { (w[o].q = w[o].q || []).push(arguments) };
js = d.createElement(s), fjs = d.getElementsByTagName(s)[0];
js.id = o; js.src = f; js.async = 1; fjs.parentNode.insertBefore(js, fjs);
}(window, document, 'script', 'wpInstallNudge', 'https://cdn-web-2.ruangguru.com/sales-nudge/6198a95130/dist/widget.js'));
wpInstallNudge('init', { targetElementId: 'wp-install-nudge', clientTarget: 'ruangguru_blog' });
</script>
<script>
// note: disabled due to auto reload page
// var lastScrollTop = 0;
// $(window).scroll(function(event){
// var st = $(this).scrollTop();
// if (st > lastScrollTop){
// $('#wp-install-nudge').slideDown( "slow", function() {});
// } else {
// $('#wp-install-nudge').slideUp( "slow", function() {});
// }
// lastScrollTop = st;
// });
// $(document).ready(function () {
// $("#wp-install-nudge").hide();
// });
$('#wp-install-nudge').click(function(){
Analytics.track("promotion__install_nudge__click",
{
user_email: "ruangguru@blog.com",
cta_link: widgetData.dataConfig.target_link
}).catch((err) => {
console.log("tracker error", err);
});
});
</script>
</footer>
<div id="__next"></div>
<script type="speculationrules">
{"prefetch":[{"source":"document","where":{"and":[{"href_matches":"\/blog\/*"},{"not":{"href_matches":["\/blog\/wp-*.php","\/blog\/wp-admin\/*","\/blog\/wp-content\/uploads\/*","\/blog\/wp-content\/*","\/blog\/wp-content\/plugins\/*","\/blog\/wp-content\/themes\/ruangguru\/*","\/blog\/*\\?(.+)"]}},{"not":{"selector_matches":"a[rel~=\"nofollow\"]"}},{"not":{"selector_matches":".no-prefetch, .no-prefetch a"}}]},"eagerness":"conservative"}]}
</script>
<script>
async function getCtaDetails(ctaIds) {
const endpoint =
" https://gw.ruangguru.com/api/v3/rdb/p_ddgy8hjx5dxsqx/CTA/views/CTA?offset=0&limit=10&where=(ctaId,in," + ctaIds.toString() + ")";
try {
const response = await fetch(endpoint, {
headers: {
"xc-token": "-hG2nBDJzSj0agSgNtcJx97M4F02y54nUMoY6plJ",
},
});
const data = await response.json();
const ctaList = data?.list || [];
const ctaMap = new Map();
for (const ctaData of ctaList) {
ctaMap.set(ctaData.ctaId, ctaData);
}
return ctaMap;
} catch (error) {
console.error("Error fetching CTA details:", error);
return new Map();
}
}
async function replaceCTA() {
const regex = /{{cta\((‘(.*?)’|“(.*?)”)\)}}/g;
const bodyHTML = document.body.innerHTML;
const matches = Array.from(bodyHTML.matchAll(regex));
const ctaIds = matches.map((match) => {
let ctaId = match[2] ?? match[3];
return ctaId;
});
const ctaMap = await getCtaDetails(ctaIds);
const replacedHTML = bodyHTML.replace(regex, (match, _inner, ctaId1, ctaId2) => {
const ctaId = ctaId1 ?? ctaId2;
const ctaData = ctaMap.get(ctaId);
if (ctaData) {
return `<a href="https://cta.ruangguru.com/${ctaData.ctaId}" target="_${ctaData.targetType}" style="position:relative;display:inline-block;">
<img src="${ctaData.imageUrl}" loading="lazy" alt="${ctaData.altText}" />
</a>`;
} else {
return match;
}
});
document.body.innerHTML = replacedHTML;
}
</script>
<meta name="author" content="Ruangguru Tech Team">
<!-- Google Tag Manager (noscript) -->
<noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-PVNLZFT" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
<!-- Tracker -->
<script type="text/javascript" src="https://cdn-web-2.ruangguru.com/landing-page-web/public/staticpages/global-assets/js/cta.js"></script>
<script src="https://unpkg.com/@dotlottie/player-component@latest/dist/dotlottie-player.mjs" type="module"></script>
</body>
</html>