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Check balance on KlikBCA with Puppeteer

sonyarianto profile image Sony AK Updated on ・2 min read

Just a real case to learn Puppeteer. What I learn here is to use Puppeteer, find selector, doing click, switch between iframes, get data from a table structure and all are automated.

Oh yea, KlikBCA is one of internet banking service in Indonesia.

We need to install puppeteer and dotenv (or maybe you already installed).

npm i puppeteer
npm i dotenv
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Let's create these two files.

File .env

KLIKBCA_USER=
KLIKBCA_PASSWORD=
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File klikbca.js

const puppeteer = require('puppeteer');
require('dotenv').config();

if (
  !process.env.KLIKBCA_USER &&
  !process.env.KLIKBCA_PASSWORD
) {
  return console.log("Please edit the .env file with your KlikBCA credential!!!");
}

(async () => {
    // set some options (set headless to false so we can see 
    // this automated browsing experience)
    let launchOptions = { headless: false };

    // let's go to the BCA internet banking website
    const browser = await puppeteer.launch(launchOptions);
    const page = await browser.newPage();
    await page.setViewport({width: 1366, height: 768});
    await page.goto('https://ibank.klikbca.com');

    // do the login
    await page.type('#user_id', process.env.KLIKBCA_USER);
    await page.waitFor(1000);
    await page.type('#pswd', process.env.KLIKBCA_PASSWORD);
    await page.waitFor(1000);
    await page.waitForSelector('input[value="LOGIN"]');
    await page.click('input[value="LOGIN"]');
    await page.waitFor(5000);

    // get the account name, this is inside an iframe
    var frame = page.frames().find(fr => fr.name() === 'atm');
    var accountName = await frame.evaluate(() => document.querySelectorAll('center')[0].textContent);
    accountName = accountName.substring(0, accountName.indexOf(',')).trim();
    await frame.waitFor(3000);

    // doing click on left menu, account information, 
    // this menu is inside an iframe
    frame = page.frames().find(fr => fr.name() === 'menu');
    await frame.waitForSelector('a[href="account_information_menu.htm"]');
    await frame.click('a[href="account_information_menu.htm"]');
    await frame.waitFor(3000);

    // doing click again on left menu, balance inquiry, 
    // this menu is still inside an iframe  
    await frame.evaluate(() => document.querySelectorAll('table')[2].querySelectorAll('tr')[0].querySelectorAll('td')[1].querySelector('a').click());
    await frame.waitFor(3000);

    // now go to iframe that display the balance (on the right side)
    // and scrape the balance data there
    frame = page.frames().find(fr => fr.name() === 'atm');
    const balanceInfo = await frame.evaluate((accountName) => {
        return {'account_no': document.querySelectorAll('table')[2].querySelectorAll('tr')[1].querySelectorAll('td')[0].textContent.trim(),
            'account_name': accountName,
            'account_type': document.querySelectorAll('table')[2].querySelectorAll('tr')[1].querySelectorAll('td')[1].textContent.trim(),
            'currency': document.querySelectorAll('table')[2].querySelectorAll('tr')[1].querySelectorAll('td')[2].textContent.trim(),
            'balance': document.querySelectorAll('table')[2].querySelectorAll('tr')[1].querySelectorAll('td')[3].textContent.trim()}
    }, accountName);
    await frame.waitFor(1000);

    // display BCA balance (plus account number, account type and currency type)
    console.log(balanceInfo);

    // do logout so everybody happy and respect the service
    // logout link is inside in iframe
    frame = page.frames().find(fr => fr.name() === 'header');
    await frame.evaluate(() => document.querySelectorAll('a')[0].click());
    await frame.waitFor(1000);

    // close the browser
    await browser.close();
})();
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Run it with

node klikbca.js
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Source code also available at GitHub at at https://github.com/sonyarianto/klikbca-check-balance-with-puppeteer

Thank you and I hope you enjoy it. Any feedback are welcome.

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