A simple script that waits for tickets to become available for the Harry Potter Studio Tour in London, and grabs them

WBTicketCheck.js

// Note that this has some limitations, such as looking specifically for adult tickets,
// looking for the given days only in the nearest month that has availability,
// and always choosing the earliest time if several are found within the desired dates.

function setAdultTickets(adultTicketsWanted) {
	const adultTicketsCount = parseInt($('.quantity-control.row > input')[0].value, 10);
	const ticketChangeIterations = Math.abs(adultTicketsWanted - adultTicketsCount);
	const ticketChangeButton = $(`.quantity-control.row > button.typcn-${adultTicketsCount < adultTicketsWanted ? 'plus' : 'minus'}`)[0];

	for (let i = 0; i < ticketChangeIterations; i++) {
		ticketChangeButton.click();
	}
}

function playSound(src) {
	return new Promise((resolve) => {
		const audio = new Audio(src);
		audio.onended = resolve;
		audio.play();
	});
}

function repeatHeyListen() {
	playSound('https://www.myinstants.com/media/sounds/hey_listen.mp3')
		.then(repeatHeyListen);
}

function waitForAvailability() {
	return new Promise((resolve) => {
		setTimeout(() => {
			const availableEls = $('.calendar>.row:not(.blankLoader) .calendar-body .day.available'), isLoading = $('.calendar-modal[data-component=eventTimeModal] .modal-content > .loading-mask.hide').length === 0;
			if (isLoading) {
				return waitForAvailability()
					.then((res) => resolve(res));
			}

			resolve(availableEls);
		}, 1000);
	});
}

function playSounds() {
	playSound('https://www.myinstants.com/media/sounds/mlg-airhorn.mp3')
		.then(() => playSound('https://www.myinstants.com/media/sounds/sound-9______.mp3'))
		.then(() => playSound('https://www.myinstants.com/media/sounds/ps_1.mp3'))
		.then(() => playSound('https://www.myinstants.com/media/sounds/wrong-answer-sound-effect.mp3'))
		.then(() => playSound('https://www.myinstants.com/media/sounds/lalalalala.swf.mp3'))
		.then(() => playSound('https://www.myinstants.com/media/sounds/tuturu_1.mp3'))
		.then(() => playSound('https://www.myinstants.com/media/sounds/hallelujahshort.swf.mp3'))
		.then(repeatHeyListen);
}

function addTicketsToBasket(dayElement) {
	dayElement.click();

	setTimeout(() => waitForAvailability()
		.then(() => {
			$('.ui-control.button.select-time')[0].click();

			setTimeout(() => {
				$('.typcn.typcn-shopping-cart.ng-binding')[0].click();
			}, 2000);
		}), 2000);
}

function checkForTickets(datesWanted=[6, 7, 8], adultTicketsWanted=2, checkFrequency=15) {
	setAdultTickets(adultTicketsWanted);

	function check() {
		$('.shared-calendar-button').click();

		waitForAvailability()
			.then(availableEls => {
				console.log(new Date(), 'Availability loaded. Checking for relevant dates...');
				for (let i = 0; i < availableEls.length; i++) {
					const day = parseInt(availableEls[i].innerText, 10);
					console.log('Day', day, 'is available...');
					if (datesWanted.includes(day)) {
						console.log('Found tickets!!!!!');
						playSounds();
						addTicketsToBasket(availableEls[i]);
						return;
					}
				}

				console.log(`Relevant dates not yet available. Will check again in ${checkFrequency} seconds.`);
				$('#page > div:nth-child(11) > div.modal.info-modal.w-auto-c > div > div.close').click();
				setTimeout(check, checkFrequency * 1000);
		});
	};
	check();
}

@spankowski I can't say I've ever encountered that error. Looking at it, it appears maybe something in the site's code (as that's what's throwing the error - not the script) isn't properly handling the case where a month has 0 available days, as you said, but only sometimes - I can't get the error to happen for me even when there's no availability.

Though, either way this isn't necessarily a problem; what does the script do in this case? If it just recognizes that there's no availability and continues refreshing and waiting for that to change, that should be fine.
If the error throws it off, though, and makes it stop searching pending human intervention, that's a bigger problem and we'll need to debug further.

Hello everyone,
As I'd like to book two tickets during May as I finally got to make a passport demand in France, I tried to use this script. It's the first time I'm using javascript, and I encountered issues: To test out the script, I tried grabbing some tickets between the 27th and the 29th of May.

But after writing "checkForTicketsInMonth([27, 28, 29, 30], 5)" and hitting enter, the only thing that happens is the calendar opening.

I'd really appreciate getting any help. Seeing how many family trips you guys saved already made my day though :)

Thanks !
Antoine

Hi @AntoineGpp, thanks for bringing this up! Apparently they've made some minor changes to the website code, which require tweaking the script. Namely, the line:

const availableEls = $('.c-14-all.available'), isLoading = $('.calendar-modal[data-component=eventTimeModal] .modal-content > .loading-container.hide').length === 0;

Needs to be changed to:

const availableEls = $('.calendar>.row:not(.blankLoader) .calendar-body .day.available'), isLoading = $('.calendar-modal[data-component=eventTimeModal] .modal-content > .loading-mask.hide').length === 0;

I haven't tested these changes very extensively, so there may be some edge cases I'm missing, but the simple flow at least appears to work.
If you do run into any additional issues, please let me know and I can see what else needs to be adjusted.

In the meanwhile, I'll correct all the existing code snippets to use this updated line. Thanks again, and hope this helps! :)

Thank you for your fast reply !
It's almost working now, I can see the calendar reloading every fifteen seconds. However, my console doesn't show me any message after starting the script, else than "undefined".
Maybe there's something to activate in my browser ? I'm using Brave with shield off.

EDIT: I tried the script in Edge, and it seems to work now. I'll keep you updated !
Thanks a lot man :)

Hello everyone,
i just tested the script on a day that i know its already available. But the script tell me, the Relevant dates not yet available. Can anybody help me about this?
Thats my code:

function setAdultTickets(adultTicketsWanted) {
	const adultTicketsCount = parseInt($('.quantity-control.row > input')[0].value, 10);
	const ticketChangeIterations = Math.abs(adultTicketsWanted - adultTicketsCount);
	const ticketChangeButton = $(`.quantity-control.row > button.typcn-${adultTicketsCount < adultTicketsWanted ? 'plus' : 'minus'}`)[0];

	for (let i = 0; i < ticketChangeIterations; i++) {
		ticketChangeButton.click();
	}
}

function playSound(src) {
	return new Promise((resolve) => {
		const audio = new Audio(src);
		audio.onended = resolve;
		audio.play();
	});
}

function repeatHeyListen() {
	playSound('https://www.myinstants.com/media/sounds/hey_listen.mp3')
		.then(repeatHeyListen);
}

function waitForAvailability(monthWanted) {
	return new Promise((resolve) => {
		setTimeout(() => {
			const availableEls = $('.calendar>.row:not(.blankLoader) .calendar-body .day.available'), isLoading = $('.calendar-modal[data-component=eventTimeModal] .modal-content > .loading-mask.hide').length === 0;
			if (isLoading) {
				return waitForAvailability(monthWanted)
					.then((res) => resolve(res));
			}

			if (monthWanted == null) {
				resolve({ availableEls });
			}

			const monthValue = $('[name="ctl00$ContentPlaceHolder$SalesChannelDetailControl$EventsDateTimeSelectorModal$EventsDateTimeSelector$CalendarSelector$MonthDropDownList"]')[0].value;
			const month = parseInt(monthValue.replace(/^\D+/g, ''), 10);

			if (month < monthWanted) {
				console.log(`Month too early (${month}) - skipping to next month.`);
				$('[name="ctl00$ContentPlaceHolder$SalesChannelDetailControl$EventsDateTimeSelectorModal$EventsDateTimeSelector$CalendarSelector$NextMonthImageButton"]').click();
				return waitForAvailability(monthWanted).then(res => resolve(res));
			}

			resolve({ availableEls, month });
		}, 1000);
	});
}

function playSounds() {
	playSound('https://www.myinstants.com/media/sounds/mlg-airhorn.mp3')
		.then(() => playSound('https://www.myinstants.com/media/sounds/sound-9______.mp3'))
		.then(() => playSound('https://www.myinstants.com/media/sounds/ps_1.mp3'))
		.then(() => playSound('https://www.myinstants.com/media/sounds/wrong-answer-sound-effect.mp3'))
		.then(() => playSound('https://www.myinstants.com/media/sounds/lalalalala.swf.mp3'))
		.then(() => playSound('https://www.myinstants.com/media/sounds/tuturu_1.mp3'))
		.then(() => playSound('https://www.myinstants.com/media/sounds/hallelujahshort.swf.mp3'))
		.then(repeatHeyListen);
}

async function addTicketsToBasket(dayElement) {
	dayElement.click();

	await new Promise((resolve) => setTimeout(resolve, 2000));
	await waitForAvailability();

	const chooseTimeButton = $('.ui-control.button.select-time:not(.disabled)')[0];
	if (!chooseTimeButton) return false;

	console.log('Found tickets!!!!!');
	playSounds();

	chooseTimeButton.click();

	await new Promise((resolve) => setTimeout(resolve, 2000));

	$('.typcn.typcn-shopping-cart.ng-binding')[0].click();
	return true;
}

function checkForTickets(datesWanted=[6, 7, 8], adultTicketsWanted=2, checkFrequency=15, monthWanted) {
	setAdultTickets(adultTicketsWanted);

	async function check() {
		if ($('.ui-control.button.extendSession').length != 0) {
			console.log('Extending session');
			$('.ui-control.button.extendSession').click();
		}
		
		$('.shared-calendar-button').click();

		waitForAvailability(monthWanted)
			.then(async ({ availableEls, month }) => {
				console.log(new Date(), `Availability loaded${month != null ? ` for month ${month}` : ''}. Checking for relevant dates...`);

				if (monthWanted != null && month > monthWanted) {
					console.log(`Month is too late (${month}). Will check again in ${checkFrequency} seconds.`);
					setTimeout(check, checkFrequency * 1000);
					return;
				}

				for (let i = 0; i < availableEls.length; i++) {
					const day = parseInt($('.c-14-all.available')[i].innerText, 10);
					console.log('Day', day, 'is available...');
					if (datesWanted.includes(day)) {
						const succeeded = await addTicketsToBasket($('.c-14-all.available')[i]);
						if (succeeded) return;
					}
				}

				console.log(`Relevant dates not yet available. Will check again in ${checkFrequency} seconds.`);
				setTimeout(check, checkFrequency * 1000);
		});
	};
	check();
}

function checkForTicketsInMonth(datesWanted, monthWanted, adultTicketsWanted, checkFrequency) {
	return checkForTickets(datesWanted, adultTicketsWanted, checkFrequency, monthWanted);
}

and thats what i´m looking for
checkForTicketsInMonth([3, 4], 5, 1, 3)

on the 3rd are available time slots

the Console say:

Day NaN is available...
Relevant dates not yet available. Will check again in 15 seconds.

thank you very much for your help!
best regards Martin

Hey @Mirtel123, looks like this is because when I was updating snippets throughout these comments (as per this), I missed one that was still using .c-14-all.available as the selector.

I've now updated that one too, replacing .c-14-all.available (in both lines in which it appears) with .calendar>.row:not(.blankLoader) .calendar-body .day.available, and it seems like that should work.
Please let me know if there are still any problems after this change. Thanks!

OMG it works great 👍 thank u very much! Do you think its possible to pretend the time for the tickets? I mean only tickets befor 12 o´clock or similar?

I finally got my tickets for the month of May ! It took me 2,5 days to get them 🤯
First experience with javascript, so interesting to see how it works!
I'm truly grateful @Rovack & everyone who took part in building this!

Amazing to hear @AntoineGpp! Hope you have an awesome time there.
And glad this proved a not-too-painful intro to JS. 😄

And @Mirtel123, sure! I think some changes to addTicketsToBasket should mostly do the trick - just replace it with this version:

async function addTicketsToBasket(dayElement, { minHour, maxHour } = {}) {
	dayElement.click();

	await new Promise((resolve) => setTimeout(resolve, 2000));
	await waitForAvailability();

	const timeRows = $('.time-selector .times .time.row');
	for (let i = 0; i < timeRows.length; i++) {
		const row = $(timeRows[i]);
		const timeString = row.find('.time')[0].innerText;
		const chooseTimeButton = row.find('.select-time:not(.disabled)')[0];

		if (!chooseTimeButton) continue;

		const hour = parseInt(timeString.split(':')[0], 10);
		if (minHour != null && hour < minHour) {
			console.log(`Tickets found at wanted date but time is too early (${timeString})`);
			continue;
		}
		if (maxHour != null && hour > maxHour) {
			console.log(`Tickets found at wanted date but time is too late (${timeString})`);
			continue;
		}

		console.log('Found tickets!!!!!');
		playSounds();
	
		chooseTimeButton.click();
	
		await new Promise((resolve) => setTimeout(resolve, 2000));
	
		$('.typcn.typcn-shopping-cart.ng-binding')[0].click();
		return true;	
	}

	return false;
}

Then we just need to pass the hour range around. To that end, the 1st line in checkForTickets becomes:

function checkForTickets(datesWanted=[6, 7, 8], adultTicketsWanted=2, checkFrequency=15, monthWanted, hourRange) {

And the line inside it that references addTicketsToBasket changes into:

const succeeded = await addTicketsToBasket($('.calendar>.row:not(.blankLoader) .calendar-body .day.available')[i], hourRange);

Finally checkForTicketsInMonth becomes:

function checkForTicketsInMonth(datesWanted, monthWanted, adultTicketsWanted, checkFrequency, hourRange) {
	return checkForTickets(datesWanted, adultTicketsWanted, checkFrequency, monthWanted, hourRange);
}

At that point, you should be able to run e.g. checkForTicketsInMonth([3, 4], 5, 1, 3, { minHour: 0, maxHour: 12 }), to only accept tickets midnight to 12 PM (inclusive; if you want entry at 11:30 at the latest, then just change 12 to 11).
If you'd rather be able to specify non-consecutive ranges, or if half hours are important as well, it should be easy enough to adjust this to take an array of specific acceptable times instead of just a min and max hour. Just let me know, and I can tweak it as needed.

Hope this works, and let me know if you run into any further issues!

Hello @Rovack i just tried it and if its on a day with available timeslots it works very fine 👍 but with a error:
this is my code now and bellow you see the errors

function setAdultTickets(adultTicketsWanted) {
	const adultTicketsCount = parseInt($('.quantity-control.row > input')[0].value, 10);
	const ticketChangeIterations = Math.abs(adultTicketsWanted - adultTicketsCount);
	const ticketChangeButton = $(`.quantity-control.row > button.typcn-${adultTicketsCount < adultTicketsWanted ? 'plus' : 'minus'}`)[0];

	for (let i = 0; i < ticketChangeIterations; i++) {
		ticketChangeButton.click();
	}
}

function playSound(src) {
	return new Promise((resolve) => {
		const audio = new Audio(src);
		audio.onended = resolve;
		audio.play();
	});
}

function repeatHeyListen() {
	playSound('https://www.myinstants.com/media/sounds/hey_listen.mp3')
		.then(repeatHeyListen);
}

function waitForAvailability(monthWanted) {
	return new Promise((resolve) => {
		setTimeout(() => {
			const availableEls = $('.calendar>.row:not(.blankLoader) .calendar-body .day.available'), isLoading = $('.calendar-modal[data-component=eventTimeModal] .modal-content > .loading-mask.hide').length === 0;
			if (isLoading) {
				return waitForAvailability(monthWanted)
					.then((res) => resolve(res));
			}

			if (monthWanted == null) {
				resolve({ availableEls });
			}

			const monthValue = $('[name="ctl00$ContentPlaceHolder$SalesChannelDetailControl$EventsDateTimeSelectorModal$EventsDateTimeSelector$CalendarSelector$MonthDropDownList"]')[0].value;
			const month = parseInt(monthValue.replace(/^\D+/g, ''), 10);

			if (month < monthWanted) {
				console.log(`Month too early (${month}) - skipping to next month.`);
				$('[name="ctl00$ContentPlaceHolder$SalesChannelDetailControl$EventsDateTimeSelectorModal$EventsDateTimeSelector$CalendarSelector$NextMonthImageButton"]').click();
				return waitForAvailability(monthWanted).then(res => resolve(res));
			}

			resolve({ availableEls, month });
		}, 1000);
	});
}

function playSounds() {
	playSound('https://www.myinstants.com/media/sounds/mlg-airhorn.mp3')
		.then(() => playSound('https://www.myinstants.com/media/sounds/sound-9______.mp3'))
		.then(() => playSound('https://www.myinstants.com/media/sounds/ps_1.mp3'))
		.then(() => playSound('https://www.myinstants.com/media/sounds/wrong-answer-sound-effect.mp3'))
		.then(() => playSound('https://www.myinstants.com/media/sounds/lalalalala.swf.mp3'))
		.then(() => playSound('https://www.myinstants.com/media/sounds/tuturu_1.mp3'))
		.then(() => playSound('https://www.myinstants.com/media/sounds/hallelujahshort.swf.mp3'))
		.then(repeatHeyListen);
}

async function addTicketsToBasket(dayElement, { minHour, maxHour } = {}) {
	dayElement.click();

	await new Promise((resolve) => setTimeout(resolve, 2000));
	await waitForAvailability();

	const timeRows = $('.time-selector .times .time.row');
	for (let i = 0; i < timeRows.length; i++) {
		const row = $(timeRows[i]);
		const timeString = row.find('.time')[0].innerText;
		const chooseTimeButton = row.find('.select-time:not(.disabled)')[0];

		if (!chooseTimeButton) continue;

		const hour = parseInt(timeString.split(':')[0], 10);
		if (minHour != null && hour < minHour) {
			console.log(`Tickets found at wanted date but time is too early (${timeString})`);
			continue;
		}
		if (maxHour != null && hour > maxHour) {
			console.log(`Tickets found at wanted date but time is too late (${timeString})`);
			continue;
		}

		console.log('Found tickets!!!!!');
		playSounds();
	
		chooseTimeButton.click();
	
		await new Promise((resolve) => setTimeout(resolve, 2000));
	
		$('.typcn.typcn-shopping-cart.ng-binding')[0].click();
		return true;	
	}

	return false;
}
function checkForTickets(datesWanted=[6, 7, 8], adultTicketsWanted=2, checkFrequency=15, monthWanted, hourRange) {
	setAdultTickets(adultTicketsWanted);

	async function check() {
		if ($('.ui-control.button.extendSession').length != 0) {
			console.log('Extending session');
			$('.ui-control.button.extendSession').click();
		}
		
		$('.shared-calendar-button').click();

		waitForAvailability(monthWanted)
			.then(async ({ availableEls, month }) => {
				console.log(new Date(), `Availability loaded${month != null ? ` for month ${month}` : ''}. Checking for relevant dates...`);

				if (monthWanted != null && month > monthWanted) {
					console.log(`Month is too late (${month}). Will check again in ${checkFrequency} seconds.`);
					setTimeout(check, checkFrequency * 1000);
					return;
				}

				for (let i = 0; i < availableEls.length; i++) {
					const day = parseInt($('.calendar>.row:not(.blankLoader) .calendar-body .day.available')[i].innerText, 10);
					console.log('Day', day, 'is available...');
					if (datesWanted.includes(day)) {
						const succeeded = await addTicketsToBasket($('.calendar>.row:not(.blankLoader) .calendar-body .day.available')[i], hourRange);
						if (succeeded) return;
					}
				}

				console.log(`Relevant dates not yet available. Will check again in ${checkFrequency} seconds.`);
				setTimeout(check, checkFrequency * 1000);
		});
	};
	check();
}

function checkForTicketsInMonth(datesWanted, monthWanted, adultTicketsWanted, checkFrequency, hourRange) {
	return checkForTickets(datesWanted, adultTicketsWanted, checkFrequency, monthWanted, hourRange);
}

VM233:37 Uncaught TypeError: Cannot read properties of undefined (reading 'value')
at :37:176

  | (anonymous) | @ | VM233:37
  | setTimeout (async) |   |  
  | (anonymous) | @ | VM233:26
  | waitForAvailability | @ | VM233:25
  | addTicketsToBasket | @ | VM233:66
  | await in addTicketsToBasket (async) |   |  
  | (anonymous) | @ | VM233:124
  | Promise.then (async) |   |  
  | check | @ | VM233:111
  | checkForTickets | @ | VM233:133
  | checkForTicketsInMonth | @ | VM233:137
  | (anonymous) | @ | VM238:1

and

Uncaught (in promise) TypeError: Cannot read properties of undefined (reading 'innerText')
at :121:97
  | (anonymous) | @ | VM233:121
  | setTimeout (async) |   |  
  | (anonymous) | @ | VM233:26
  | waitForAvailability | @ | VM233:25
  | addTicketsToBasket | @ | VM233:66
  | await in addTicketsToBasket (async) |   |  
  | (anonymous) | @ | VM233:124
  | Promise.then (async) |   |  
  | check | @ | VM233:111
  | checkForTickets | @ | VM233:133
  | checkForTicketsInMonth | @ | VM233:137
  | (anonymous) | @ | VM238:1

it is impressive, how fast you can do this coding!
Thank you for your support and patience

Hmm, how interesting... I haven't been able to get it to happen for me, but sounds like it could be a result of the race condition mentioned here, which may become more likely once we add hour constraints.

If you could send the exact parameters you pass to checkForTicketsInMonth, maybe I'll be able to see how it happens. Or, if you could send the lines printed above the error, so I can see what was happening that led up to it, that could help as well.

Of course, if this happens randomly only every so often, and not in some deterministic fashion, one workaround would be to just automatically ignore the error and continue. I think you might be able to achieve this by turning checkForTickets into:

function checkForTickets(datesWanted=[6, 7, 8], adultTicketsWanted=2, checkFrequency=15, monthWanted, hourRange) {
	setAdultTickets(adultTicketsWanted);

	async function check() {
		try {
			if ($('.ui-control.button.extendSession').length != 0) {
				console.log('Extending session');
				$('.ui-control.button.extendSession').click();
			}
			
			$('.shared-calendar-button').click();

			await waitForAvailability(monthWanted)
				.then(async ({ availableEls, month }) => {
					console.log(new Date(), `Availability loaded${month != null ? ` for month ${month}` : ''}. Checking for relevant dates...`);

					if (monthWanted != null && month > monthWanted) {
						console.log(`Month is too late (${month}). Will check again in ${checkFrequency} seconds.`);
						setTimeout(check, checkFrequency * 1000);
						return;
					}

					for (let i = 0; i < availableEls.length; i++) {
						const day = parseInt($('.calendar>.row:not(.blankLoader) .calendar-body .day.available')[i].innerText, 10);
						console.log('Day', day, 'is available...');
						if (datesWanted.includes(day)) {
							const succeeded = await addTicketsToBasket($('.calendar>.row:not(.blankLoader) .calendar-body .day.available')[i], hourRange);
							if (succeeded) return;
						}
					}

					console.log(`Relevant dates not yet available. Will check again in ${checkFrequency} seconds.`);
					setTimeout(check, checkFrequency * 1000);
			});
		} catch (err) {
			console.error('Error checking. Just gonna keep trying.', err);
			setTimeout(check, checkFrequency * 1000);
		}
	};
	check();
}

@Rovack today i tried it again and it works perfectly 👍 i dont now why it dosn‘t the last time. Thank u very much for your support

Great! Glad to hear it @Mirtel123.
Let me know how it turns out or if you run into any further issues. :)

Hello there,

Sorry for this dumb questions but really i need to ask :/

i've modified the script in which days i want to buy. (14 - 15 may) here is the script code;

---

// Note that this has some limitations, such as looking specifically for adult tickets,
// looking for the given days only in the nearest month that has availability,
// and always choosing the earliest time if several are found within the desired dates.

function setAdultTickets(adultTicketsWanted) {
const adultTicketsCount = parseInt($('.quantity-control.row > input')[0].value, 10);
const ticketChangeIterations = Math.abs(adultTicketsWanted - adultTicketsCount);
const ticketChangeButton = $(.quantity-control.row > button.typcn-${adultTicketsCount < adultTicketsWanted ? 'plus' : 'minus'})[0];

for (let i = 0; i < ticketChangeIterations; i++) {
	ticketChangeButton.click();
}

}

function playSound(src) {
return new Promise((resolve) => {
const audio = new Audio(src);
audio.onended = resolve;
audio.play();
});
}

function repeatHeyListen() {
playSound('https://www.myinstants.com/media/sounds/hey_listen.mp3')
.then(repeatHeyListen);
}

function waitForAvailability() {
return new Promise((resolve) => {
setTimeout(() => {
const availableEls = $('.c-14-all.available')
if (availableEls.length === 0) {
return waitForAvailability()
.then((res) => resolve(res));
}

		resolve(availableEls);
	}, 1000);
});

}

function playSounds() {
playSound('https://www.myinstants.com/media/sounds/mlg-airhorn.mp3')
.then(() => playSound('https://www.myinstants.com/media/sounds/sound-9______.mp3'))
.then(() => playSound('https://www.myinstants.com/media/sounds/ps_1.mp3'))
.then(() => playSound('https://www.myinstants.com/media/sounds/wrong-answer-sound-effect.mp3'))
.then(() => playSound('https://www.myinstants.com/media/sounds/lalalalala.swf.mp3'))
.then(() => playSound('https://www.myinstants.com/media/sounds/tuturu_1.mp3'))
.then(() => playSound('https://www.myinstants.com/media/sounds/hallelujahshort.swf.mp3'))
.then(repeatHeyListen);
}

function addTicketsToBasket(dayElement) {
dayElement.click();

waitForAvailability()
	.then(() => {
		$('.ui-control.button.select-time')[0].click();

		setTimeout(() => {
			$('.typcn.typcn-shopping-cart.ng-binding')[0].click();
		}, 2000);
	});

}

function checkForTickets(datesWanted=[14, 15], adultTicketsWanted=2, checkFrequency=15) {
setAdultTickets(adultTicketsWanted);

function check() {
	$('.shared-calendar-button').click();

	waitForAvailability()
		.then(availableEls => {
			console.log(new Date(), 'Availability loaded. Checking for relevant dates...');
			for (let i = 0; i < availableEls.length; i++) {
				const day = parseInt(availableEls[i].innerText, 10);
				console.log('Day', day, 'is available...');
				if (datesWanted.includes(day)) {
					console.log('Found tickets!!!!!');
					playSounds();
					addTicketsToBasket(availableEls[i]);
					return;
				}
			}

			console.log(`Relevant dates not yet available. Will check again in ${checkFrequency} seconds.`);
			$('#page > div:nth-child(11) > div.modal.info-modal.w-auto-c > div > div.close').click();
			setTimeout(check, checkFrequency * 1000);
	});
};
check();

}

i just updated datesWanted.

here are the questions;

1. when i run script, google chrome says ''undefined'' i think this is normal but i have to be sure :)
2. after a while webpage popups an error ''SESSION WARNING
   Your session has expired.
   START OVER''

is it normal?

again sorry for disturb.
thanks for your help.

Hi @gokhanalpdogan! First of all, yes: getting "undefined" is normal. Just make sure after you run that, you also actually use checkForTickets, as described here, because until you do nothing is actually happening. That's also actually where you're supposed to specify the dates, although the way you did it should be fine too.

That same comment also mentions, near the bottom, how to deal with these expiring sessions, by linking here where there's a solution for that.

Hope this helps, but let me know if there are any further questions or complications.

Hey @Rovack I just wanted to say a big thank you for this one. Got it up and running, took about five days straight use and I was able to get four tickets for next week.

@chfrodin That's awesome, makes me really happy to hear - thanks so much for letting me know! 😄