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how do I assign specific json data for web automation?

I'm using puppeteer to do web automations. I'm automating the task to fill up a form. My script is set to open multiple browsers so as to automate filling the form alot faster. However I need each browser automation to use separate information. Here's the code below.
for(let i = 0; i<json.length; i++){
await page.type('#firstName', json[i].firstName);
await page.type('#lastName', json[i].lastName);
await page.type('#phone', json[i].phone);
await page.type('#address1', json[i].unitNumber);
await page.type('#address2', json[i].address1);
await page.type('#address3', json[i].address2); //not complusory(for sg region ONLY)
await page.type('#town', json[i].townCity);
await page.type('#county', json[i].stateProvince); //not complusory(for sg region ONLY)
await page.type('#postcodeLook', json[i].postalCode);
}
Here's my json (just a template but there would be lines of information in this format.)
firstName;lastName;phone;unitNumber;address1;address2;townCity;stateProvince;postalCode
There error Im facing is that when inputing the data into the form it actually fills in the whole list of information into one of the forms input section. What I mean is , e.g for firstName it will fill in firstName1, firstName2, firstName3 and so on depending on the number of data in the json. How would I fix this? Thank you in advance

How do you enter text into a Flash TextArea from Puppeteer?

I am trying to automate login in a Flash object via Puppeteer. I have automated focusing on the Flash TextArea just by clicking, and that seems to work (the vertical blinking bar that indicates that you are typing appears). However, I have tried using page.keyboard.press, page.keyboard.up/page.keyboard.down, and page.keyboard.type, and none successfully enter text into the username or password field. Furthermore, I have set a piece of injected Javascript to console.log the key name of every keypress event on the Flash object, and it only fires when I am manually typing while focused on the Flash object. It does not log anything during my attempts to use Puppeteer keyboard inputs. My code is as follows:
const login = async (page) => {
await page.waitFor(20);
const username = process.env.SIGNIN_USERNAME;
await page.click(500,500); // Select the username field
await page.waitFor(20); // Allow the blinking bar to appear
await page.keyboard.type(username);
for(let char of username) {
await page.keyboard.press(char);
await page.waitFor(20); // So that it appears like a user is typing
}
for(let char of username){
await page.keyboard.down(char);
await page.waitFor(10);
await page.keyboard.up(char);
await page.waitFor(20);
}
await page.type("object",username); // The Flash object is the first object on the page
console.log(username) // The username is logged to the console and is defined
};
This code does not result in any text appearing in the Flash TextArea. However, the correct username is logged to the console.
Am I making a mistake, or is there some general way in Puppeteer or even just in browser Javascript to enter text into a Flash TextArea that I'm missing? Thanks.

Try using a more low-level function like keyboard.sendCharacter, which doesn't deal with all the weird event handling of keyboard.press.

Image shows 1 thing, but queried data shows another when loading a website

I was trying to query a website: const url = "https://personal.vanguard.com/us/FixedIncomeHome" with the hope to automate some functionality within puppeteer.
I noticed if i create a screen shot: page.screenshot("preclick.png") it will show the page data with tabs. When i try to follow it up with a query, it seems to not return the second tab (denoted by the following selector: a[container="CD"]
const browser = await puppeteer.launch()
const page = await browser.newPage()
await page.goto(url, {waitUntil: 'networkidle2'})
page.screenshot("start.png")
page.evaluate( () => {
document.querySelectorAll("a[container='CD']")[0].click()
})
///...
and i dont really know why this is the case. Ideally, i am trying to click CD and then click an empty search. I noticed that since session ids are tracked, I wanted to do this as a sort of E2E test in order to get the resulting table data.
I see that the Content of tab etc is dynamically loaded, so somehow there is an issue with the page being able to query.
I was attempting something else to see what would occur, waiting for the tag to appear, BUT it would just timeout after 30 seconds:
await page.waitForSelector("a[container='CD']").then( async resolve => {
page.execute( () => document.querySelector("a[container='CD']").click() );
});
I dont know why the screenshot shows the HTML, but when attempting to query for it from within execute it fails. It doesnt make sense to me why this occurs. Ideally, I want to click CD tab, then i want to click Search, then i want to loop through the 20 results in the table.
EDIT I was noticing that evaluate was not querying the component correctly because of an iframe. If i want to develop e2e testing though, i assumed there was a way to somehow get a reference to the button and click it, or simulate a click.*

You can get the iframe from a selector. As the iframe has the ID TWRIFrame, you can wait for that selector, then get the contentFrame from that element.
Once you have the frame, the frame class has almost the same functions as the page class, e.g. click.
Notice that, as that iframe is from other domain, with the --disable-features=site-per-process flag.
const browser = await puppeteer.launch({headless: false, args: ['--disable-features=site-per-process']});
const page = await browser.newPage();
await page.goto('https://personal.vanguard.com/us/FixedIncomeHome', {waitUntil: 'networkidle2'});
await page.screenshot("start.png");
await page.waitForSelector('#TWRIFrame');
const frameElement = await page.$('#TWRIFrame');
const frame = await frameElement.contentFrame();
await frame.click("a[container='CD']");

Entering data into multiple form inputs in Puppeteer

I'm trying to fill out a form in Puppeteer with an email and password, and then hit submit.
Each time the tests are run either the email or password isn't fully entered before the submit button is pressed. This is a cut-down version of what I'm doing:
await page.type(selectorSlackInputEmail, email);
await page.type(selectorSlackInputPassword, password);
await page.click(selectorSlackButtonSignIn);
I think it might be because the test isn't properly awaiting the completion of page.type and therefore focus switches to the next input or the submit button is pressed before each input field is complete.
How do I get around this problem?

I would expect your await directives to cover the issue you're seeing - my best guess is that because the type method simply...
sends keydown, keypress/input and keyup events [1]
... that maybe some listeners are taking a little while to execute their hooked functions between the sending of those events and the calling of the click method.
How about a workaround that explicitly checks that those selectors have the expected data before clicking submit?
await page.type(selectorSlackInputEmail, email);
await page.type(selectorSlackInputPassword, password);
await page.waitFor(() => {
return document.querySelector(selectorSlackInputEmail).value = email) &&
document.querySelector(selectorSlackInputPassword).value = password);
});
// And only *then*
await page.click(selectorSlackButtonSignIn);

After trying other methods (including await page.type and await page.focus followed by await page.keyboard.type) this is the only thing that works for me to fill multiple form fields:
await signInPage.evaluate(
(email, password) => {
document.querySelector('input#email').value = email;
document.querySelector('input#password').value = password;
},
email,
password
);
This doesn't satisfy my original use case though. I want to properly simulate a user typing into forms but this method circumvents that and directly inserts values into the fields.
I'd welcome a 'proper' solution to this problem.

I had the same problem in my code and decided to just use a delay with the click function.
await page.click('input[value="SUBMIT"]', {delay: 100});

Click on an dropdown menu

Hello,
I´m currently working on an Javascript based on Nodejs where I use Puppeteer as an help to scrape the web. As you can read in the title I´m trying to click on a dropdown menu Item, where the dropdown changes if you type in something diffrent. First here is my code:
// Navigate to the Homepage
await page.goto('https://www.futbin.com/');
await page.click('#player_search');
await page.keyboard.type(playerName);
await page.keyboard.press('ArrowDown');
await page.keyboard.press('ArrowDown');
// Create a screenshot
await page.screenshot({
path: 'screenshot.png'
});
So Basically i do the screenshot just for proving that the headless-browser does the right thing.
The website is futbin, if you want to see how their website works and take a look at the inspect, i think that could help.
But my real problem is that normally when you press enter you directly go to the player page (where i want to get). but after my script there comes always the error "no target". So the keyboard.press('Enter') don´t works. Also other Suggestions from SO didn´t work for me as the dropdown isn´t native and don´t hast counting indexes.
I would really appreciate some Suggestions !
at the end i wanted leave the html code from the first row of the dropdown as well, but i never worked so i would appreciate if you´d take a look at the website please !

You were very close, you dont need to use the arrows as you can find the item to click another way. The secret is to add a waitForSelector as the dropdown makes a call to a api endpoint. Also notice the waitForSelector on the final page to render before we take the screenshot.
Therefore just do this:-
const puppeteer = require('puppeteer');
async function run() {
const browser = await puppeteer.launch( {
headless: false
});
const page = await browser.newPage();
await page.goto('https://www.futbin.com/');
await page.type('#player_search', "Dave");
await page.waitForSelector("ul li a[data-id]");
await page.click("ul li a[data-id]");
await page.waitForSelector('#cal');
await page.screenshot( { path: "./dave.png"});
await browser.close();
};
run();
EDIT ADDTIONAL
To select any index use:-
let index = 3;
let selector = "ul li:nth-child(" + index +") a[data-id]"
await page.click(selector);
This goes to the third item in the dropdown. HTH