Puppeteer - How to fill form that is inside an iframe? - puppeteer

Question

I have to fill out a form that is inside an iframe, here the sample page. I cannot access by simply using page.focus() and page.type(). I tried to get the form iframe by using const formFrame = page.mainFrame().childFrames()[0], which works but I cannot really interact with the form iframe.

Answer 1

I figured it out myself. Here's the code.
console.log('waiting for iframe with form to be ready.');
await page.waitForSelector('iframe');
console.log('iframe is ready. Loading iframe content');
const elementHandle = await page.$(
'iframe[src="https://example.com"]',
);
const frame = await elementHandle.contentFrame();
console.log('filling form in iframe');
await frame.type('#Name', 'Bob', { delay: 100 });

Answer 2

Instead of figuring out how to get inside the iFrame and type, I would simplify the problem by navigating to the IFrame URL directly
https://warranty.goodmanmfg.com/registration/NewRegistration/NewRegistration.aspx?Sender=Goodman
Make your script directly go to the above URL and try automating, it should work
Edit-1: Using frames
Since the simple approach didn't work for you, we do it with the frames itself
Below is a simple script which should help you get started
const puppeteer = require('puppeteer');
(async () => {
const browser = await puppeteer.launch({ headless: false });
const page = await browser.newPage();
await page.goto('http://www.goodmanmfg.com/product-registration', { timeout: 80000 });
var frames = await page.frames();
var myframe = frames.find(
f =>
f.url().indexOf("NewRegistration") > -1);
const serialNumber = await myframe.$("#MainContent_SerNumText");
await serialNumber.type("12345");
await page.screenshot({ path: 'example.png' });
await browser.close();
})();
The output is

Answer 3

If you can't select/find iFrame read this:
I had an issue with finding stripe elements.
The reason for that is the following:
You can't access an with different origin using JavaScript, it would be a huge security flaw if you could do it. For the same-origin policy browsers block scripts trying to access a frame with a different origin. See more detailed answer here
Therefore when I tried to use puppeteer's methods:Page.frames() and Page.mainFrame(). ElementHandle.contentFrame() I did not return any iframe to me. The problem is that it was happening silently and I couldn't figure out why it couldn't find anything.
Adding these arguments to launch options solved the issue:
'--disable-web-security',
'--disable-features=IsolateOrigins,site-per-process'

Answer 4

Though you have figured out but I think I have better solution. Hope it helps.
async doFillForm() {
return await this.page.evaluate(() => {
let iframe = document.getElementById('frame_id_where_form_is _present');
let doc = iframe.contentDocument;
doc.querySelector('#username').value='Bob';
doc.querySelector('#password').value='pass123';
});
}