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<h1 class="content-title">
Mempelajari Konsep Gelombang Elektromagnetik, Sifat & Manfaatnya | Fisika Kelas 12 </h1>
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<p class="content-author"><a href="https://www.ruangguru.com/blog/author/leo-bisma" class="">Leo Bisma</a> </p>
<p class="content-info"><span>September 25, 2025 • </span> <span>5 minutes read</span></p>
<br />
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<p><img decoding="async" style="width: 820px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Konsep%20Gelombang%20Elektromagnetik%20-%20Fisika%20Kelas%2012-02%20(1).jpg" alt="Konsep Gelombang Elektromagnetik, Sifat, Spektrum, dan Manfaatnya" width="820" /></p>
<blockquote>
<p style="text-align: center;"><em><span style="font-size: 16px;">Yuk, kenali konsep gelombang elektromagnetik, sifat, dan manfaatnya secara lengkap di <strong><a href="https://www.ruangguru.com/blog/c/fisika/fisika-sma-kelas-12">artikel Fisika kelas 12</a></strong> berikut ini!</span> </em></p>
</blockquote>
<p style="text-align: center;"><em>—</em></p>
<p> </p>
<p style="text-align: justify;">Halo! Apakah kamu suka mendengarkan radio? Lagu apa yang sering kamu dengar? Kamu tau <em>gak,</em> lagu yang kamu dengar dari radio merupakan penerapan dari gelombang elektromagnetik, <em>lho!</em></p>
<p style="text-align: justify;">Pernah dengar tentang gelombang ini? Apa <em>sih spektrum </em>gelombang elektromagnetik itu? Apa saja penerapan lain dari gelombang elektromagnetik? Dari pada penasaran, yuk langsung aja simak pembahasannya!</p>
<p> </p>
<h2><span style="font-size: 18pt;">Konsep Gelombang Elektromagnetik</span></h2>
<p style="text-align: justify;"><strong>Gelombang elektromagnetik adalah gelombang yang tidak membutuhkan medium dalam perambatannya</strong>. Energi elektromagnetik merambat dalam gelombang melalui beberapa karakter seperti panjang gelombang, amplitudo, frekuensi, dan kecepatan.</p>
<p style="text-align: justify;">Energi elektromagnetik dipancarkan atau dilepaskan pada level yang berbeda. Semakin tinggi level energi dalam suatu sumber energi, maka semakin rendah panjang gelombang dari energi yang dihasilkan akan tetapi semakin tinggi frekuensinya.</p>
<p> </p>
<div style="text-align: justify;">
<h2><span style="font-size: 18pt;">Sifat Gelombang Elektromagnetik</span></h2>
<p>Gelombang elektromagnetik adalah jenis dari gelombang dengan sifat umum yang disebut spektrum elektromagnetik. Gelombang elektromagnetik memiliki sifat sebagai berikut:</p>
</div>
<p><img decoding="async" style="width: 600px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Konsep%20Gelombang%20Elektromagnetik%20-%20Fisika%20Kelas%2012-03.jpg" alt="Sifat gelombang elektromagnetik" width="600" /></p>
<p> </p>
<p style="text-align: justify;">Sifat-sifat lainnya yang membedakan gelombang elektromagnetik dengan yang lainnya ialah gelombang elektromagnetik dapat membawa energi dari satu tempat ke tempat lain, dan juga memiliki kecepatan konstan di ruang hampa, yaitu sebesar <span style="font-weight: bold;">3 × 10<sup>8</sup> m/s. </span></p>
<p><strong>Baca Juga:<a href="https://www.ruangguru.com/blog/transistor"> Mengenal Transistor, Si Kecil Pendobrak Zaman</a></strong></p>
<p> </p>
<h2><span style="font-size: 18pt;">Spektrum Gelombang Elektromagnetik</span></h2>
<p style="text-align: justify;">Spektrum gelombang elektromagnetik dengan urutan dari panjang gelombang terbesar atau frekuensi terkecil ke panjang gelombang terkecil atau frekuensi terbesar terbagi menjadi 7 macam gelombang, yakni:</p>
<ol>
<li style="text-align: justify;" aria-level="1">Gelombang radio: dimanfaatkan untuk mentransmisikan sinyal pada jarak yang sangat jauh.</li>
<li style="text-align: justify;" aria-level="1">Gelombang mikro: ketika gelombang mikro diserap oleh sebuah benda, maka akan muncul efek pemanasan pada benda tersebut.</li>
<li style="text-align: justify;" aria-level="1">Sinar inframerah: sinar inframerah tidak dapat terlihat tetapi dapat terdeteksi diatas spektrum cahaya merah yang dipakai untuk memindahkan energi yang tidak terlalu besar.</li>
<li style="text-align: justify;" aria-level="1">Cahaya tampak: memiliki spektrum elektromagnetik yang bisa dideteksi oleh mata manusia.</li>
<li style="text-align: justify;" aria-level="1">Sinar ultraviolet: sumber utama yang memancarkan sinar ultraviolet adalah matahari.</li>
<li style="text-align: justify;" aria-level="1">Sinar X: Sinar ini memiliki nama lain yakni sinar rontgen. Merupakan salah satu bentuk dari radiasi elektromedik</li>
<li style="text-align: justify;" aria-level="1">Sinar gamma: memiliki frekuensi paling tinggi dan daya tembus paling besar dari semua sinar yang ada di alam semesta.</li>
</ol>
<p> </p>
<p><img fetchpriority="high" decoding="async" style="width: 600px; display: block; margin-left: auto; margin-right: auto;" title="konsep gelombang elektromagnetik" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/elektro.jpg" alt="Spektrum elektromagnetik" width="600" height="500" data-constrained="true" /></p>
<p><strong><span style="color: #000000;">Baca Juga: </span></strong><a href="https://blog.ruangguru.com/postulat-einstein-dalam-teori-relativitas-khusus"><strong>Postulat Einstein dalam Teori Relativitas Khusus</strong></a></p>
<p> </p>
<h2><span style="font-size: 18pt;">Manfaat Gelombang Elektromagnetik</span></h2>
<p style="text-align: justify;">Setelah memahami tentang konsep dan spektrum dari gelombang elektromagnetik, mari kita mengenal manfaat gelombang elektromagnetik dalam kehidupan kita sehari-hari:</p>
<p> </p>
<h3><span style="font-size: 14pt;">1. Gelombang radio</span></h3>
<p>Gelombang ini dimanfaatkan untuk:</p>
<ul>
<li aria-level="1">Mentransmisikan sinyal pada jarak yang sangat jauh.</li>
<li aria-level="1">Mentransmisikan sinyal komunikasi berupa siaran radio dan stasiun TV.</li>
<li aria-level="1">Pencitraan satelit ke bumi dalam pembuatan peta 3 dimensi.</li>
</ul>
<p> </p>
<h3><span style="font-size: 14pt;">2. Gelombang mikro </span></h3>
<p>Jenis gelombang ini dimanfaatkan pada:</p>
<ul>
<li aria-level="1"><em>microwave</em> (oven) untuk memasak/menghangatkan makanan.</li>
<li aria-level="1">berkomunikasi melalui radar.</li>
<li aria-level="1">Mendeteksi posisi suatu objek yang diamati.</li>
</ul>
<p> </p>
<h3><span style="font-size: 14pt;">3. Sinar inframerah </span></h3>
<p>Sinar ini banyak dimanfaatkan contohnya pada:</p>
<ul>
<li style="text-align: justify;" aria-level="1"><em>Remote control</em> dalam mentransmisikan data dalam bentuk energi.</li>
<li style="text-align: justify;" aria-level="1">Teknologi pada kamera CCTV / alat militer yang bisa menerawang di malam hari atau dalam keadaan gelap.</li>
<li style="text-align: justify;" aria-level="1">Digunakan sebagai alat medis.</li>
</ul>
<p> </p>
<h3><span style="font-size: 14pt;">4. Cahaya tampak </span></h3>
<p>Manfaat yang diaplikasikan dari cahaya ini adalah:</p>
<ul>
<li style="text-align: justify;" aria-level="1">Penggunaan laser dalam serat optik pada bidang kedokteran untuk mendiagnosis penyakit.</li>
<li style="text-align: justify;" aria-level="1">Sinar laser yang dapat menyalurkan suara, gambar, atau sinyal melalui serat optik.</li>
<li style="text-align: justify;" aria-level="1">Laser tertentu bisa dimanfaatkan untuk mengelas dan memotong benda.</li>
</ul>
<p> </p>
<h3><span style="font-size: 14pt;">5. Sinar ultraviolet</span></h3>
<p>Penggunaan sinar UV biasanya dimanfaatkan untuk:</p>
<ul>
<li aria-level="1">Mengecek keaslian uang dalam dunia perbankan.</li>
<li aria-level="1">Pada bidang medis, digunakan untuk membunuh bakteri.</li>
<li aria-level="1">Mengeringkan tinta dan resin.</li>
</ul>
<p> </p>
<h3><span style="font-size: 14pt;">6. Sinar X</span></h3>
<p>Fungsi dari sinar X antara lain:</p>
<ul>
<li style="text-align: justify;" aria-level="1">Umumnya dalam dunia medis untuk mendapat pencitraan melihat organ dalam tubuh dan tulang (Rontgen).</li>
<li style="text-align: justify;" aria-level="1">Digunakan dalam dunia manufaktur untuk mengecek kecacatan / mengecek kualitas produk.</li>
<li style="text-align: justify;" aria-level="1">Mengecek kualitas dari batu permata dan kristal.</li>
</ul>
<p> </p>
<h3><span style="font-size: 14pt;">7. Sinar gamma</span></h3>
<p>Sangat langka untuk kita temui, manfaatnya ialah:</p>
<ul>
<li style="text-align: justify;" aria-level="1">Dalam dunia medis digunakan pada alat pemindai (CT-Scan).</li>
<li style="text-align: justify;" aria-level="1">Menyembuhkan penyakit kanker dengan metode operasi pisau gamma.</li>
<li style="text-align: justify;" aria-level="1">Radiasi sinar gamma juga digunakan dalam bedah saraf.</li>
<li style="text-align: justify;" aria-level="1">Digunakan untuk membunuh bakteri dan virus.</li>
</ul>
<p style="text-align: justify;">
<p style="text-align: justify;"><strong>Baca juga: </strong><a href="https://www.ruangguru.com/blog/peran-sinar-x-di-berbagai-bidang-kehidupan"><strong>Peran Sinar – X di Berbagai Bidang Kehidupan</strong></a></p>
<p> </p>
<h2><span style="font-size: 18pt;">Energi Gelombang Elektromagnetik</span></h2>
<p style="text-align: justify;">Seperti yang sudah dibahas sebelumnya bahwa gelombang elektromagnetik dapat membawa energi ke suatu tempat, kita akan bahas nih apa saja contoh yang membuktikan bahwa gelombang elektromagnetik <em>beneran</em> bisa membawa energi juga.</p>
<p style="text-align: justify;">Contoh paling sederhana yang bisa kamu buktikan juga, adalah cahaya dari lampu bohlam dan juga panas yang diradiasikan oleh api. <em>Coba deh</em> kamu sentuh sebentar saja bagian lampu dari kendaraan yang sebelumnya sudah menyala, terasa hangat bukan?</p>
<p style="text-align: justify;">Begitu pula ketika kamu kedinginan saat berkemah, hawa panas yang diradiasikan dari api unggun akan terasa menghangatkan badanmu. Itulah bukti bahwa gelombang elektromagnetik juga membawa energi.</p>
<p style="text-align: justify;">Aliran energi dalam gelombang elektromagnetik dinyatakan dalam laju energi yang mengalir per satuan luas atau daya per satuan luas. Berikut persamaan umum gelombang elektromagnetik:</p>
<p style="text-align: center;"><span style="font-size: 14pt;"><strong><em>E = E</em></strong><strong><em><sub>maks</sub></em></strong><strong><em> sin (k</em></strong><strong><em>𝑥</em></strong><strong><em> -ωt)</em></strong></span></p>
<p style="text-align: center;"><span style="color: #000000; font-size: 14pt;"><strong><em>B = B</em></strong><strong><em><sub>maks</sub></em></strong><strong><em> sin (k</em></strong><strong><em>𝑥</em></strong><strong><em> -ωt)</em></strong></span></p>
<p><span style="color: #000000;"><strong><em><img decoding="async" class="aligncenter" style="width: 300px;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/WhatsApp%20Image%202021-10-19%20at%2015.10.19.jpeg" alt="Rumus elektromagnetik" width="300" /></em></strong></span></p>
<p> </p>
<p style="text-align: justify;"><strong>Keterangan:</strong></p>
<ul>
<li style="text-align: justify;"><em>ƒ</em> = frekuensi (Hz)</li>
<li style="text-align: justify;"><em>T </em>= periode (s)</li>
<li style="text-align: justify;"><em>λ </em>= panjang gelombang (m)</li>
<li style="text-align: justify;"><em>k </em>= bilangan gelombang</li>
<li style="text-align: justify;"><em>c</em> = kecepatan cahaya di vakum</li>
<li style="text-align: justify;"><em>ω </em>= kecepatan sudut (rad/s)</li>
</ul>
<p> </p>
<p style="font-weight: normal;">Nilai laju energi rata-rata yang mengalir tiap satuan waktu luas adalah <strong>intensitas.</strong></p>
<p> </p>
<p style="text-align: justify; font-weight: normal;"><strong>Contoh soal</strong></p>
<p style="text-align: justify;">Medan listrik maksimum di suatu titik yang berjarak 5 meter dari sumber radiasi adalah 3 V/m. Daya yang dihasilkan oleh sumber tersebut adalah…</p>
<ol style="list-style-type: upper-alpha;">
<li>2,50 W</li>
<li>3,75 W</li>
<li>6,00 W</li>
<li>7,50W</li>
<li>9,00 W</li>
</ol>
<p> </p>
<p> </p>
<p> </p>
<p style="text-align: justify;"><strong>Jawaban: </strong></p>
<p style="text-align: justify;"><strong>Pembahasan:</strong></p>
<p style="text-align: justify;">Intensitas sumber pada jarak 5 meter dapat diketahui dengan:</p>
<p style="text-align: justify;"><img decoding="async" style="width: 200px;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/WhatsApp%20Image%202021-10-19%20at%2015.37.41.jpeg" alt="Intensitas gelombang " width="200" /></p>
<p style="text-align: justify;">Dengan demikian, daya yang dihasilkan oleh sumber, yaitu:</p>
<p style="text-align: justify;"><img decoding="async" style="width: 175px;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/WhatsApp%20Image%202021-10-19%20at%2015.37.41%20(1).jpeg" alt="Daya sumber" width="175" /></p>
<p style="text-align: justify;"><strong>Jadi, jawaban yang tepat adalah B.</strong></p>
<p style="text-align: justify;"><em>Nah, </em>sampai sini sudah paham kan tentang konsep, spektrum dan pemanfaatan gelombang elektromagnetik beserta penerapannya dalam kehidupan sehari-hari. Ingin menonton video pelajaran beranimasi lainnya yang sesuai dengan pelajaran di sekolahmu? <em>Yuk, </em>belajar di <a href="https://www.ruangguru.com/ruangbelajar" target="_blank" rel="noopener"><strong>ruangbelajar</strong></a> sekarang juga!</p>
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debug: false,
plugins: [analyticsTrackable()],
});
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const post_id = 4423;
const tags_id = [76,10,37];
const category_id = 513;
const sub_category_id = 519;
const customData = {
tags_id: tags_id,
category_id: category_id,
sub_category_id: sub_category_id,
post_id: post_id,
};
Analytics.plugins.trackable.context(JSON.stringify(customData));
Analytics.ready(function () {
Analytics.page();
});
$(document).on('click', '[data-tracking-event-type]', function (event) {
const eventType = $(this).data('tracking-event-type');
const context = $(this).data('tracking-context');
Analytics.track(eventType, context);
});
</script>
<footer class="footer">
<div class="container">
<div class="row">
<div class="col-lg-3">
<div class="office">
<a href="https://www.ruangguru.com/">
<img src="https://cdn-web-2.ruangguru.com/static/RG_LOGO_WHITE.png?convert=auto" alt="Logo Ruangguru" loading="lazy" />
</a>
<address>
<p class="hq">RUANGGURU HQ</p>
<p>
Gedung Sinarmas MSIG Tower Lt. 33. Jl. Jenderal Sudirman Kav. 21, Karet Kuningan, Setiabudi, Jakarta Selatan, Jakarta 12920
</p>
</address>
</div>
<nav class="footer-menu call-us">
<p class="title">Hubungi Kami</p>
<address>
<a href="mailto:info@ruangguru.com">
<img class="icon-call-us" src="https://cdn-web-2.ruangguru.com/file-uploader/lp/4739a139-8f09-42ea-b517-d842c5d1c28d.png" loading="lazy" alt="Logo Email Footer" />
info@ruangguru.com</a>
<a href="tel:02130930000">
<img class="icon-call-us" src="https://cdn-web-2.ruangguru.com/file-uploader/lp/6f4bb6c8-52c9-4acb-859b-47a10a7eec75.png" loading="lazy" alt="Logo Phone Footer" />(021) 3093 0000</a>
<a href="https://wa.me/6281574410000">
<img class="icon-call-us" src="https://cdn-web-2.ruangguru.com/file-uploader/lp/4b58468a-b2f9-40e4-867f-d3242a065dcf.png" loading="lazy" alt="Logo Whatsapp Footer" />0815 7441 0000</a>
</address>
</nav>
<nav class="footer-menu social d-none d-lg-block">
<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">
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<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">
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<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">
<source srcset="https://cdn-web-2.ruangguru.com/static/tiktok.png?height=60" type="image/png">
<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>
<div class="col-lg-9">
<div class="row">
<div class="col-6 col-md-3">
<nav class="footer-menu">
<p class="title">Produk Ruangguru</p>
<ul type="none">
<li><a href="https://roboguru.ruangguru.com" target="_blank">Roboguru</a></li>
<li><a href="https://www.ruangguru.com/roboguruplus">Roboguru Plus</a></li>
<li><a href="https://www.ruangguru.com/dafa-lulu">Dafa dan Lulu</a></li>
<li><a href="https://www.ruangguru.com/for-kids/kursus">Kursus for Kids</a></li>
<li><a href="https://www.ruangguru.com/for-kids">Ruangguru for Kids</a></li>
<li><a href="https://www.ruangguru.com/bisnis">Ruangguru for Business</a></li>
<li><a href="https://www.ruangguru.com/ruanguji">Ruanguji</a></li>
<li><a href="https://www.ruangguru.com/blog">Ruangbaca</a></li>
<li><a href="https://www.ruangguru.com/ruangkelas">Ruangkelas</a></li>
<li><a href="https://www.ruangguru.com/ruangbelajar">Ruangbelajar</a></li>
<li><a href="https://pengajar.ruangguru.com/">Ruangpengajar</a></li>
<li><a href="https://www.ruangguru.com/privat">Ruangguru Privat</a></li>
<li><a href="https://www.ruangpeduli.org/" target="_blank">Ruangpeduli</a></li>
</ul>
</nav>
</div>
<div class="col-6 col-md-3">
<nav class="footer-menu">
<p class="title">Bantuan & Panduan</p>
<ul type="none">
<li><a href="https://www.ruangguru.com/company-credentials">Company Credentials</a></li>
<li><a href="https://www.ruangguru.com/beasiswa">Beasiswa Ruangguru</a></li>
<li><a href="https://www.ruangguru.com/cicilan">Cicilan Ruangguru</a></li>
<li><a href="https://www.ruangguru.com/promo">Promo Ruangguru</a></li>
<li><a href="https://ticketing.ruangguru.com/help?request_type_id=459" target="_blank">Vulnerability Report</a></li>
<li><a href="https://www.ruangguru.com/bantuan#layanan">Layanan Pengaduan</a></li>
<li><a href="https://www.ruangguru.com/terms-conditions">Syarat & Ketentuan</a></li>
<li><a href="https://www.ruangguru.com/privacy-policy">Kebijakan Privasi</a></li>
<li><a href="https://www.ruangguru.com/about-us">Tentang Kami</a></li>
<li><a href="https://www.ruangguru.com/contact-us">Kontak Kami</a></li>
<li><a href="https://www.ruangguru.com/press">Press Kit</a></li>
<li><a href="https://www.ruangguru.com/bantuan">Bantuan</a></li>
<li><a href="https://career.ruangguru.com/">Karier</a></li>
</ul>
</nav>
</div>
<div class="col-6 col-md-3">
<nav class="footer-menu">
<p class="title">Produk Lainnya</p>
<ul type="none">
<li><a href="https://www.brainacademy.id/" target="_blank">Brain Academy</a></li>
<li><a href="https://www.english-academy.id/" target="_blank">English Academy</a></li>
<li><a href="https://skillacademy.com/" target="_blank">Skill Academy</a></li>
<li><a href="https://www.ruangkerja.id/" target="_blank">Ruangkerja</a></li>
<li><a href="https://www.schoters.com/id/" target="_blank">Schoters</a></li>
<li><a href="https://www.kalananti.id/" target="_blank">Kalananti</a></li>
</ul>
</nav>
</div>
<div class="col-6 col-md-3">
<nav class="footer-menu">
<p class="title"> Coba GRATIS Aplikasi Ruangguru</p>
<div class="download-list">
<ul>
<li>
<a target="_blank" rel="nofollow" href="https://apps.apple.com/id/app/ruangguru-solusi-belajar/id1099742206?l=id">
<img src="https://cdn-web-2.ruangguru.com/static/appstore.png" loading="lazy" alt="Button App Store Footer " />
</a>
</li>
<li>
<a target="_blank" rel="nofollow" href="https://play.google.com/store/apps/details?id=com.ruangguru.livestudents&hl=in">
<img src="https://cdn-web-2.ruangguru.com/static/googleplay.png" loading="lazy" alt="Button Google Play Footer " />
</a>
</li>
<li>
<a target="_blank" rel="nofollow" href="https://appgallery.huawei.com/#/app/C102352375">
<img src="https://cdn-web-2.ruangguru.com/static/huawei.png" loading="lazy" alt="Button AppGallery Footer " />
</a>
</li>
</ul>
</div>
</nav>
</div>
</div>
</div>
</div>
<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">
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<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">
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<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>
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</picture>
</a>
<a target="_blank" href="https://www.youtube.com/ruangguru">
<picture>
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</a>
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<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/tiktok.png?height=60&convert=webp" type="image/webp">
<source srcset="https://cdn-web-2.ruangguru.com/static/tiktok.png?height=60" type="image/png">
<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>
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async function getCtaDetails(ctaIds) {
const endpoint =
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const ctaMap = new Map();
for (const ctaData of ctaList) {
ctaMap.set(ctaData.ctaId, ctaData);
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return ctaMap;
} catch (error) {
console.error("Error fetching CTA details:", error);
return new Map();
}
}
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const regex = /{{cta\((‘(.*?)’|“(.*?)”)\)}}/g;
const bodyHTML = document.body.innerHTML;
const matches = Array.from(bodyHTML.matchAll(regex));
const ctaIds = matches.map((match) => {
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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) {
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} else {
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}
});
document.body.innerHTML = replacedHTML;
}
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