Artikel ini membahas tentang rumus dan hukum Coloumb, serta bagaimana kita bisa memahami konsepnya dengan mudah.
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Dalam tulisan mengapa petir bisa terjadi ini, kamu sudah tahu kalau muatan listrik terdiri dari dua jenis: muatan positif dan negatif. Kenyataannya, interaksi dari muatan-muatan itu bisa menghasilkan gaya, lho. Wah, gaya? Seperti apa itu? Di kelas delapan, kita sudah sama-sama tahu apa itu pengertian gaya dan pengaruhnya terhadap benda lain.
Tapi, gaya hasil dari benda bermuatan listrik, kira-kira kayak gimana ya?
Supaya bisa menjawabnya, mari kita berkenalan dengan fisikawan Prancis bernama Charles-Augustin de Coulomb. Dialah salah satu ilmuwan yang penemuannya paling berpengaruh dalam sejarah kelistrikan.
Coulomb belajar matematika di kampus terkenal Collège des Quatre-Nations. Tahun 1759, ia masuk sekolah militer Mézières. Setelahnya, Coloumb menghabiskan sembilan tahun hidupnya di Hindia Barat menjadi insinyur militer. Saat revolusi Prancis bergejolak, dia memutuskan untuk pensiun dan tinggal di Blois, Prancis, dan mengabdikan dirinya menjadi peneliti ilmiah.
Coulomb ini mulai mengembangkan penelitian mengenai listrik dengan menyelidiki lebih lanjut mengenai hukum tolakan listrik yang ditemukan Joseph Priestley. Lalu, pada 1768, dengan menggunakan Torsion Balance, Coloumb mulai ngotak-ngatik dan mengecek interaksi dari dua benda bermuatan.
Torsion balance (Sumber: nationalmaglab.org)
Dari sana dia tahu kalau ada karakteristik tertentu dari benda-benda yang bermuatan. Kalau muatannya sejenis, benda ini akan mengalami gaya tolak-menolak. Sementara kalau muatannya beda jenis, gaya yang timbul tarik-menarik.
Seperti apa?
Yak, betul. Kayak sifat magnet.
Tidak hanya sifat dari gaya yang muncul, Coulomb juga mencoba mengubah variabel-variabel yang ada. Iya, dia pengen tahu, “Gimana sih cara menghitung gayanya?”
Pertama, dari dua benda tadi, dia mengubah besar-kecilnya muatan di salah satu benda (dengan menambah muatan, atau menguranginya dengan mengalirkan ke bumi) sambil mengecek perubahan gaya yang terjadi.
Ternyata, gaya sebanding dengan perubahan muatan kedua benda. Maka, dia mendapatkan hasil sementara:
F ∝ Q1Q2
Tidak berhenti sampai di sana, ia mengubah jarak antara dua benda tadi. Ia menjauhkan lalu mendekatkan kembali kedua benda tersebut. Sambil tetap memeriksa gaya yang terjadi.
Ternyata, gaya berbanding terbalik dengan kuadrat jaraknya. Semakin jauh jarak dua benda tadi, gaya yang dihasilkan akan semakin mengecil sebesar pangkat dua. Dia pun dapat hipotesis lanjutan:
dengan menggabungkan dengan hipotesis pertama, maka gaya yang timbul menjadi seperti gini:
Wah, udah mulai kebentuk nih pencarian gaya dari benda-benda bermuatan si Coulomb.
Tapi, ini belum selesai.
Coulomb ternyata menyadari bahwa interaksi ini akan beda hasilnya, kalau dilakukan di medium yang berbeda. Kalau benda ini ada di dalam air, misalnya. Hasilnya akan berbeda dengan di udara terbuka, misalnya.
Baca juga: Penerapan Listrik Dinamis di Sekitar Kita
Maka, dia butuh satu variabel lagi.
Yak, betul. konstanta. Berhubung kita kemungkinan besar ngebuat percobaan atau ngitung gaya dua benda bermuatan ini di udara terbuka, atau ruang hampa, sehingga konstantanya jadi 9 x 109 Nm2/C2. Sehingga kesimpulan hukum Coulomb adalah sebagai berikut:
Konsep pencarian konstanta ini sebenarnya mirip-mirip dengan penemuan Cavendish tentang gaya gravitasi bumi. Cuma, ya, kita nggak akan terlalu jauh sampai sana sih. Yang paling penting adalah kebayang bagaimana konsep dari penemuan gaya ini. Soalnya, kalau udah kebayang, kan, nggak perlu ribet-ribet harus terpaksa menghafal rumusnya. Tinggal pahamin cerita soal Coulomb ini, lalu bakal auto inget deh sama materi dan konsepnya. Ya, kamu bisa aja, sih, bikin “hafalan cepet” pakai singkatan kayak gaya = kakiku dibagi rata-rata buat ngapalin rumusnya. Tapi, buat apa, kalau cuma sekadar ingat gituan? :p
Sekarang kita coba masuk ke contoh soal ya. Di artikel ini gampang aja deh. Cuma biar nggak salah pake dan tahu kalau kita harus muterin balik ke satuan yang dipakai.
Contoh:
Jika ada dua benda bermuatan dengan Q1 = 4 x 10-6 C dan Q2 = 6 x 10-6 C dengan jarak 2 cm. Berapakah gaya Coulomb yang terdapat di antara dua benda tersebut?
Pembahasan:
Catatan: karena jenis muatan Q1 (+4) dan Q2 (+6) sama-sama positif, maka gaya yang terjadi di antara mereka adalah gaya tolak-menolak.
Nah, gimana? Sekarang udah lebih paham, kan, soal rumus hukum Coulomb ini? Kalau kamu ingin mencoba latihan dengan soal-soal yang lebih banyak, atau ingin tahu penerapannya, tonton aja di ruangbelajar!
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<h1 class="content-title">
Memahami Rumus dan Konsep Hukum Coulomb | Fisika Kelas 9 </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>December 12, 2019 • </span> <span>4 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/memahami%20rumus%20dan%20konsep%20hukum%20coulomb.png" alt="memahami rumus dan konsep hukum coulomb" width="820" style="width: 820px; margin: 0px auto;"></p>
<p><em>Artikel ini membahas tentang rumus dan hukum Coloumb, serta bagaimana kita bisa memahami konsepnya dengan mudah.</em></p>
<p><span id="more-7468"></span></p>
<p style="text-align: center;"><em>—</em></p>
<p style="text-align: justify;">Dalam tulisan <strong><a href="https://blog.ruangguru.com/ipa-kelas-9-mengapa-petir-bisa-terjadi">mengapa petir bisa terjadi</a></strong> ini, kamu sudah tahu kalau muatan listrik terdiri dari dua jenis: muatan positif dan negatif. Kenyataannya, interaksi dari muatan-muatan itu bisa menghasilkan gaya, <em>lho</em>. <em>Wah</em>, gaya? Seperti apa itu? Di kelas delapan, kita sudah sama-sama tahu <strong><a href="https://blog.ruangguru.com/pengertian-gaya-dan-5-pengaruhnya-terhadap-benda-lain">apa itu pengertian gaya dan pengaruhnya terhadap benda lain.</a></strong></p>
<p style="text-align: justify;">Tapi, gaya hasil dari benda bermuatan listrik, kira-kira <em>kayak</em> gimana ya?</p>
<p style="text-align: justify;">Supaya bisa menjawabnya, mari kita berkenalan dengan fisikawan Prancis bernama <strong>Charles-Augustin de Coulomb</strong>. Dialah salah satu ilmuwan yang penemuannya paling berpengaruh dalam sejarah kelistrikan.</p>
<p><img decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/siapa%20penemu%20hukum%20coulomb.png" alt="siapa penemu hukum coulomb" width="600" style="width: 600px; display: block; margin: 0px auto;"></p>
<p style="text-align: justify;">Coulomb belajar matematika di kampus terkenal Collège des Quatre-Nations. Tahun 1759, ia masuk sekolah militer Mézières. Setelahnya, Coloumb menghabiskan sembilan tahun hidupnya di Hindia Barat menjadi insinyur militer. Saat <a href="/revolusi-perancis" rel="noopener" target="_blank"><strong>revolusi Prancis</strong></a> bergejolak, dia memutuskan untuk pensiun dan tinggal di Blois, Prancis, dan mengabdikan dirinya menjadi peneliti ilmiah.</p>
<p style="text-align: justify;">Coulomb ini mulai mengembangkan penelitian mengenai listrik dengan menyelidiki lebih lanjut mengenai hukum tolakan listrik yang ditemukan Joseph Priestley. Lalu, pada 1768, dengan menggunakan Torsion Balance, Coloumb mulai ngotak-ngatik dan mengecek interaksi dari dua benda bermuatan.</p>
<p style="text-align: center;"><img decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/torsion%20balance%20coulomb.png" alt="torsion balance coulomb" width="197" style="width: 197px; display: block; margin: 0px auto;">Torsion balance (Sumber: nationalmaglab.org)</p>
<p style="text-align: justify;"> </p>
<p style="text-align: justify;">Dari sana dia tahu kalau ada <strong>karakteristik tertentu dari benda-benda yang bermuatan.</strong> Kalau muatannya sejenis, benda ini akan mengalami gaya tolak-menolak. Sementara kalau muatannya beda jenis, gaya yang timbul tarik-menarik.</p>
<p style="text-align: justify;">Seperti apa?</p>
<p style="text-align: justify;">Yak, betul. Kayak <strong><a href="https://blog.ruangguru.com/mengenal-magnet-dan-sifatnya">sifat magnet.</a></strong></p>
<p><img decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/interaksi%20benda%20bermuatan%20listrik.png" alt="interaksi benda bermuatan listrik" width="600" style="width: 600px; display: block; margin: 0px auto;"></p>
<p>Tidak hanya sifat dari gaya yang muncul, Coulomb juga mencoba mengubah variabel-variabel yang ada. Iya, dia pengen tahu, “<em>Gimana sih</em> cara menghitung gayanya?”</p>
<p>Pertama, dari dua benda tadi, dia mengubah besar-kecilnya muatan di salah satu benda (dengan menambah muatan, atau menguranginya dengan mengalirkan ke bumi) sambil mengecek perubahan gaya yang terjadi.</p>
<p><img decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/pengaruh%20besar%20kecilnya%20muatan%20listrik%20terhadap%20gaya%20coulomb.png" alt="pengaruh besar kecilnya muatan listrik terhadap gaya coulomb" width="600" style="width: 600px; display: block; margin: 0px auto;"></p>
<p style="text-align: justify;">Ternyata, <strong>gaya sebanding dengan perubahan muatan kedua benda.</strong> Maka, dia mendapatkan hasil sementara:</p>
<p style="text-align: center; font-size: 24px;">F ∝ Q<sub>1</sub>Q<sub>2</sub></p>
<p style="text-align: justify;">Tidak berhenti sampai di sana, ia mengubah jarak antara dua benda tadi. Ia menjauhkan lalu mendekatkan kembali kedua benda tersebut. Sambil tetap memeriksa gaya yang terjadi.</p>
<p><img decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/pengaruh%20jarak%20terhadap%20gaya%20coulomb.png" alt="pengaruh jarak terhadap gaya coulomb" width="600" style="width: 600px; display: block; margin: 0px auto;"></p>
<p style="text-align: justify;">Ternyata, gaya <strong>berbanding terbalik dengan kuadrat jaraknya. </strong>Semakin jauh jarak dua benda tadi, gaya yang dihasilkan akan semakin mengecil sebesar pangkat dua. Dia pun dapat hipotesis lanjutan:</p>
<p><img decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/image-730.png" width="115" style="width: 115px; display: block; margin: 0px auto;"></p>
<p style="text-align: justify;"> </p>
<p style="text-align: justify;">dengan menggabungkan dengan hipotesis pertama, maka gaya yang timbul menjadi seperti gini:</p>
<p><img decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/image-731.png" width="138" style="width: 138px; display: block; margin: 0px auto;"></p>
<p style="text-align: justify;"><em>Wah</em>, udah mulai <em>kebentuk nih </em>pencarian gaya dari benda-benda bermuatan si Coulomb.</p>
<p style="text-align: justify;">Tapi, ini belum selesai.</p>
<p style="text-align: justify;">Coulomb ternyata menyadari bahwa interaksi ini akan beda hasilnya, <strong>kalau dilakukan di medium yang berbeda.</strong> Kalau benda ini ada di dalam air, misalnya. Hasilnya akan berbeda dengan di udara terbuka, misalnya.</p>
<p style="text-align: justify;"><strong>Baca juga: <a href="https://blog.ruangguru.com/ipa-kelas-9-penerapan-listrik-dinamis-di-sekitar-kita">Penerapan Listrik Dinamis di Sekitar Kita</a></strong></p>
<p style="text-align: justify;">Maka, dia butuh satu variabel lagi.</p>
<p style="text-align: justify;">Yak, betul. konstanta. Berhubung kita kemungkinan besar ngebuat percobaan atau ngitung gaya dua benda bermuatan ini di udara terbuka, atau ruang hampa, sehingga konstantanya jadi 9 x 10<sup>9</sup> Nm<sup>2</sup>/C<sup>2</sup>. Sehingga kesimpulan hukum Coulomb adalah sebagai berikut:</p>
<p><img decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/rumus%20hukum%20coulomb.png" alt="rumus hukum coulomb" width="600" style="width: 600px; display: block; margin: 0px auto;"></p>
<p style="text-align: justify;">Konsep pencarian konstanta ini sebenarnya mirip-mirip dengan penemuan Cavendish tentang gaya gravitasi bumi. Cuma, ya, kita <em>nggak</em> akan terlalu jauh sampai sana sih. Yang paling penting adalah kebayang bagaimana konsep dari penemuan gaya ini. Soalnya, kalau udah kebayang, kan, <em>nggak</em> perlu ribet-ribet harus terpaksa menghafal rumusnya. Tinggal pahamin cerita soal Coulomb ini, lalu bakal <em>auto</em> inget deh sama materi dan konsepnya. Ya, kamu bisa aja, sih, bikin “hafalan cepet” pakai singkatan kayak gaya = kakiku dibagi rata-rata buat ngapalin rumusnya. Tapi, buat apa, kalau cuma sekadar ingat gituan? :p</p>
<p style="text-align: justify;">Sekarang kita coba masuk ke contoh soal ya. Di artikel ini gampang aja deh. Cuma biar <em>nggak</em> salah <em>pake</em> dan tahu kalau kita harus <em>muterin</em> balik ke satuan yang dipakai.</p>
<p style="text-align: justify;"><strong>Contoh:</strong></p>
<p style="text-align: justify;">Jika ada dua benda bermuatan dengan Q<sub>1</sub> = 4 x 10<sup>-6</sup> C dan Q<sub>2</sub> = 6 x 10<sup>-6 </sup>C dengan jarak 2 cm. Berapakah gaya Coulomb yang terdapat di antara dua benda tersebut?</p>
<p style="text-align: justify;"><strong>Pembahasan:</strong></p>
<p style="text-align: justify;"><img decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/image-732.png"></p>
<p style="text-align: justify;"><em>Catatan: karena jenis muatan Q<sub>1</sub> (+4) dan Q<sub>2</sub> (+6) sama-sama positif, maka gaya yang terjadi di antara mereka adalah gaya tolak-menolak.</em></p>
<p style="text-align: justify;">Nah, gimana? Sekarang udah lebih paham, kan, soal rumus <strong>hukum Coulomb</strong> ini? Kalau kamu ingin mencoba latihan dengan soal-soal yang lebih banyak, atau ingin tahu penerapannya, <em>tonton</em> aja di <strong><a href="https://ruangguru.onelink.me/blPk/eaff0eb9">ruangbelajar!</a></strong></p>
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// 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">
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<noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-PVNLZFT" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
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<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>