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<h1 class="content-title">
Optimasi dan Program Linear | Matematika Kelas 11 </h1>
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<p class="content-author"><a href="https://www.ruangguru.com/blog/author/rangga-putra-pertama" class="">Rangga Putra Pertama</a> </p>
<p class="content-info"><span>August 10, 2018 • </span> <span>4 minutes read</span></p>
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<p><em><img decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Header%20blog%20RG/Matematika_11.jpg" width="821" style="width: 821px; display: block; margin-left: auto; margin-right: auto;" alt="optimasi dan program linear"></em></p>
<p style="text-align: justify;"><em>Cara menyelesaikan program linear dengan mudah dibahas di artikel ini melalui contoh nyata di kehidupan sehari-hari dan lingkungan sekitar.</em></p>
<p style="text-align: center;"><em>—</em></p>
<p><span id="more-9343"></span></p>
<p style="text-align: justify;"><span style="background-color: transparent;">Siapa </span><em style="background-color: transparent;">sih</em><span style="background-color: transparent;"> yang nggak mengagumi Bapak Proklamasi kita, Ir. Soekarno? Jasanya </span><em style="background-color: transparent;">buesaaaar </em><span style="background-color: transparent;">sekali bagi kemerdekaan Indonesia, Squad. Namun tahu nggak kalau ia pernah punya sahabat? Yap, namanya adalah Che Guevara, revolusioner sekaligus Menteri Perindustrian negara Kuba. Bayangin, sama gigihnya seperti Bung Karno, Che Guevara mengangkat perekonomian Kuba dari keadaan genting memakai prinsip penyelesaian program linear dalam matematika!</span></p>
<p style="text-align: justify;"><em>Fyi</em>, penyelesaian program linear dipakai untuk optimasi atau mencari nilai yang paling efektif dari suatu proses. <em>Nah</em>, Che Guevara memanfaatkannya untuk mengolah industri-industri Kuba. Program linear membantu mengetahui berapa <em>sih</em> bahan baku yang harus dipakai suatu pabrik agar biaya produksi serendah mungkin tapi keuntungannya semaksimal mungkin. Penasaran <em>kan </em>gimana cara optimasi dengan menyelesaikan program linear? <em>Cekidot</em>!</p>
<p><img decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Gambar%201-2.png" width="600" style="width: 600px; display: block; margin: 0px auto;" alt="Soekarno dan Che Guevara"></p>
<p style="text-align: center;"><em style="background-color: transparent;">Presiden Soekarno berdiskusi dengan Che Guevara (sumber: liputan6.com)</em></p>
<p style="text-align: justify;"><strong>Program linear biasanya berbentuk sistem pertidaksamaan linear dua variabel</strong>, Squad. Kamu harus mengingat kembali materi <a href="/matematika-kelas-10-pertidaksamaan-linear-dua-variabel-sistem-pertidaksamaan-linear-dua-variabel" rel="noopener" target="_blank"><strong>pertidaksamaan dan sistem pertidaksamaan linear dua variabel</strong></a>. Perlu kamu ketahui juga kalau optimasi dengan menyelesaikan program linear ada beberapa cara. Pastinya yang diterangkan di sini yang paling mudah <em>dong</em>. <em>Yuk</em> langsung cek langkah-langkah optimasi dengan menyelesaikan program linear.</p>
<div><img decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Gambar%202-1.jpg" alt="Langkah-langkah optimasi program linear" width="600" style="width: 600px; display: block; margin: 0px auto;"></div>
<p style="text-align: justify;"> </p>
<p style="text-align: justify;">Industri yang berkembang di Kuba saat itu adalah industri gula. Misalnya untuk membuat gula pada suatu pabrik diperlukan bahan baku tebu jenis X dan Y. <strong>Banyaknya tebu X dan tebu Y yang bisa diolah tidak lebih dari 6 peti kemas</strong>. <strong>Satu peti kemas untuk tebu X beratnya 2 ton</strong> dan <strong>satu peti kemas untuk tebu Y beratnya 3 ton</strong>.</p>
<p style="text-align: justify;">Padahal, <strong>berat total peti kemas tebu X dan Y tidak boleh lebih dari 15 ton</strong> agar kendaraan pengangkut tidak <em>overweight</em>. Bila <strong>satu peti kemas tebu jenis X menghasilkan 3 ton gula</strong> dan <strong>satu peti kemas tebu jenis Y menghasilkan 4 ton gula</strong>, dengan semua syarat di atas, berapa <strong>maksimum berat gula yang dapat dihasilkan</strong>?</p>
<p style="text-align: justify;">Masalah di atas adalah masalah yang bisa diselesaikan dengan optimasi dari menyelesaikan program linear, Squad. Kok bisa? Karena kita mencari banyaknya tebu X dan Y paling efektif untuk menghasilkan gula semaksimal mungkin walaupun terdapat seperti jumlah peti kemas tidak boleh lebih dari 6 dan berat totalnya tidak boleh lebih dari 15 ton. Langsung aja <em>yuk</em> kita ikuti langkah-langkah di atas.</p>
<p style="text-align: justify;"><strong style="background-color: transparent;">1. Buat sistem pertidaksamaan linear dari masalah yang ada</strong></p>
<p style="text-align: justify;">Gimana tuh cara membuat sistem pertidaksamaannya? <em>Slow</em> Squad mudah kok. Coba lihat <em>nih</em>.<span style="background-color: transparent;"> </span></p>
<div><img decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Gambar%203-1.png" alt="langkah-langkah progra linear" width="600" style="width: 600px; display: block; margin: 0px auto;"></div>
<div> </div>
<div><strong>2. Selesaikan sistem pertidaksamaan linear tersebut</strong></div>
<p style="text-align: justify;">Caranya gimana hayo? Kita harus menggabungkan semua pertidaksamaan tersebut dalam satu grafik Squad. Ingat <em>lho</em> cara menggambar grafik yaitu cari dulu titik x saat y = 0 dan titik y saat x = 0 lalu kedua titik tersebut dihubungkan <em>deh</em>. Buka lagi deh materi <a href="/matematika-kelas-11-persamaan-garis-lurus-dan-masalah-polusi-udara" rel="noopener" target="_blank"><strong>persamaan garis lurus dan masalah polusi udara</strong></a>. Jangan lupa buat diarsir sesuai tanda pertidaksamaannya ya. Kalau lebih dari di atas dan kurang dari di bawah. Nanti jadi seperti ini <em>deh</em>.</p>
<div><img decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/uji%20titik%20program%20linear.png" alt="uji titik program linear" width="600" style="width: 600px; display: block; margin: 0px auto;"></div>
<div style="text-align: justify;"> </div>
<div style="text-align: justify;"><strong style="background-color: transparent;">3. Lakukan uji titik yang sesuai di penyelesaian sistem pertidaksamaan yang dihasilkan</strong></div>
<p style="text-align: justify;"><span style="background-color: transparent;">Uji titik itu gimana sih? Gini, kita kan mau tau </span><em style="background-color: transparent;">nih</em><span style="background-color: transparent;"> jumlah gula maksimum yang dihasilkan berapa. </span><strong style="background-color: transparent;">Satu peti kemas tebu X menghasilkan 3 ton gula. Padahal ada sebanyak x peti. Maka tebu X bisa menghasilkan 3x ton gula</strong><span style="background-color: transparent;">. Begitu pula dengan tebu Y. </span><strong style="background-color: transparent;">Ada sebanyak y peti dan masing-masing menghasilkan 4 ton gula. Maka tebu Y bisa menghasilkan 4y ton gula</strong><span style="background-color: transparent;">. Maka dihasilkan total gula sebanyak</span></p>
<p style="text-align: center;"><em>Total gula = 3x + 4y</em></p>
<p style="text-align: justify;"><em>Nah</em>, x dan y nya diisi berapa tuh? Kita isi dengan x dan y dari titik-titik kritis. <strong>Titik kritis adalah titik yang termasuk daerah penyelesaian sistem pertidaksamaan namun merupakan titik perpotongan 2 garis atau lebih</strong>. Coba deh cari dulu titik kritisnya.</p>
<p style="text-align: justify;"><img decoding="async" src="https://lh5.googleusercontent.com/QfSIveJtgI7GLsJuNceILMvIUswMi2RoJLFQN-vNNvgc31J2EEbl8QpskYhb-R3Z6Y6l1ZqE5tRGr_D7LIOJq2ggp5Zhr9CIw5AnEYxCcdAu5bTpjY58Bk69kBeSPQubiacgV9SbeO8dW4DmAg" alt="" style="background-color: transparent;"></p>
<p style="text-align: justify;"><strong style="background-color: transparent;">Didapat deh 3 titik kritis tuh yaitu (0,5), (3,3), dan (6,0)</strong><span style="background-color: transparent;">. Langsung aja masukin semuanya ke 3x + 4y</span></p>
<div><img decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Gambar%204.jpg" alt="uji titik optimasi program linear" width="600" style="width: 600px; display: block; margin: 0px auto;"></div>
<p style="text-align: justify;"><span style="background-color: transparent;">Lihat coba </span><em style="background-color: transparent;">tuh</em><span style="background-color: transparent;">. Saat dimasukkan x = 3 dan y = 3 maka 3x + 4y paling besar kan? Jadi agar berat gula yang dihasilkan maksimu, jumlah peti tebu jenis X haruslah sebanyak 3 peti kemas dan jenis Y haruslah sebanyak 3 peti kemas. Nanti dihasilkan </span><em style="background-color: transparent;">deh</em><span style="background-color: transparent;"> gula seberat 21 ton.</span></p>
<p style="text-align: justify;"><span style="background-color: transparent;">Itu lah manfaat dari program linear. Kita bisa tahu harus berapa banyak bahan baku yang dipakai agar hasilnya bisa optimal. Kalau hasilnya optimal, untungnya gede juga dong. Pantas saja tuh Che Guevara bisa mengangkat perekonomian Kuba di zaman itu. Kalau kamu belajar yang rajin, kamu juga pasti bisa seperti dia Squad. Semangat 45!</span></p>
<div><img decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/siapa%20che%20guevara.png" alt="siapa che guevara" width="600" style="width: 600px; display: block; margin: 0px auto;"></div>
<p style="text-align: justify;"><span style="background-color: transparent;">Kalau kamu tertarik untuk belajar lebih dalam lagi, langsung aja daftar di </span><a href="https://bit.ly/rg_app" rel="noopener" target="_blank"><strong style="background-color: transparent;">ruangbelajar</strong></a><span style="background-color: transparent;">. Banyak banget </span><em style="background-color: transparent;">lho</em><span style="background-color: transparent;"> video materi dan pembahasan soal. Tunggu apa lagi? Sikat Squad!</span></p>
<p><span style="background-color: transparent;"><a href="https://link.ruangguru.com/blPk/eaff0eb9" target="_blank" style="text-align: center;" class="rg-cta" rel="noopener"><img fetchpriority="high" decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/cta/0ec4a2df-db2e-4ae1-8473-692756dcb684.jpeg" width="822" height="200" alt="IDN CTA Blog ruangbelajar Ruangguru" /></a></span></p>
<p><strong>Sumber Referensi:</strong></p>
<p><span>Wirodikromo, S. dan Darmanto, M. (2019) Matematika untuk SMA/MA Kelas XI kelompok Wajib 2. Jakarta:Erlangga</span></p>
<p><strong>Referensi Gambar:</strong></p>
<p>Foto ‘<em style="background-color: transparent;">Presiden Soekarno berdiskusi dengan Che Guevara’ </em>[Daring]. Tautan:https://m.liputan6.com/news/read/2217098/kisah-persahabatan-bung-karno-dan-che-guevara-usai-kaa-1955 (Diakses: 14 Desember 2020)</p>
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<p><em>Artikel diperbaharui 14 Desember 2020</em></p>
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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">
<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">
<source srcset="https://cdn-web-2.ruangguru.com/static/youtube.png?height=60" type="image/png">
<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>
<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>