Yesterday I was working on a site that needed an iframe embedded in the page whose content came from a completely different domain. I try to steer clear of iframes at all costs normally so forgive me if what I’m about to say is pretty obvious.
I didn’t want the content in the iframe to appear as though it was in an iframe, so obviously I stripped off all the default browser styles…well, the border. I wanted the iframe to be as high as the content it was containing so that no scroll bars would appear.
So what I did was just give the iframe a height, however when the user navigated to a different page within the iframe, the height I had previously set was too big or too small.
I instantly thought “right, JavaScript will sort this out for me!” and proceeded to quickly code up a function that would inspect the scrollHeight of the content in the iframe and adjust the iframe height accordingly.
No! Said cross domain policy. I had momentarily forgotten all about that. Since the iframe content came from a different domain, I wasn’t allowed to access the document object of the iframe (or vice versa).
Firefox says “Error: Permission denied to access property ‘document’” and other browsers similar.
I started searching for some kind of workaround. Of course there isn’t really one…except I did find an interesting hack for Firefox. Which is – an iframe document can alter the url fragment of the parent window’s location object! ha madness.
The idea is that the document in the iframe alters the url fragment to read:
http://freestyle-developments.co.uk/blog/?p=150#138
Where 138 is the height of the iframe document (obviously you could be a bit more fancy and send other parameters and name them e.g #height:138 but for simplicity I’ve just set the value). The parent then reads this value and sets the iframe height accordingly:
var iFrameHeight = parseInt(location.hash.replace('#', ''));
So…yeah, that’s pretty interesting, but not really a solution. Check out the example implementation here.
Anyway, what to do? HTML5 web messaging to the rescue! Sweet! HTML5 web messaging is cross domain messaging done right. Not only does the messenger choose who should receive messages, but the recipient also chooses who to receive messages from.
The idea is that after the iframe document has loaded, it sends a message to the parent window telling it what it’s scrollHeight is. The parent listens for messages, and sets the height of the iframe when it receives a message.
A couple of things to note:
- There has to be communication between the two documents. i.e. the document on the external domain needs to actively send this message. Which can be a complete show stopper if you have no control over the document on the external domain
- This isn’t going to work on IE < 9. I tested the implementation linked below is working on FireFox 4 (Beta 7), Safari 5.0.2, Chrome 8, Opera 10.63 and Internet Explorer 9 Platform Preview 7. Which is a pretty good spread to be honest
Check out the example HTML5 web messaging implementation here.
Thanks for the great tips. Discover more at consulta nutricional Saltillo .
Организуете концерт, корпоратив или частное торжество и хотите, чтобы на сцене выступила настоящая звезда? Профессиональное агентство по подбору артистов https://booking90.ru/ помогает пригласить на мероприятие популярных музыкантов, телеведущих, комиков и шоу-команды под любой формат и бюджет. Команда берёт на себя переговоры, юридическое сопровождение и технические детали, чтобы вы получили желаемый уровень шоу без лишних рисков и неожиданностей, а гости надолго запомнили ваш праздник.
Knowing the difference between units and syringes saved me money! Greensboro botox
Appreciate the comprehensive advice. For more, visit citas de nutrición cerca de mí .
Are there any certain developmental milestones that preschools focal point on? I’d wish to have in mind greater what to anticipate next 12 months as my toddler transitions into kindergarten ! infant child care
Sun Meadow Online – Simple design and easy-to-use navigation made exploring products effortless.
Дим доброго времени суток отпиши за приход заказала тоже эйф-дисс скажи чего ожидать? купить Кокаин Мефедрон Экстази Спасибо за объективный отзыв мы работаем – что бы Вы улыбались:ok:Трек получил
Helpful reminder about spring maintenance. I booked a gutter guard install with Aluminum gutter guards to reduce cleanings this year.
Loved how cheap dumpster rental supplied distinctive dumpster sizes for our varying needs.
bright store link – Convenient navigation and simple menus helped me get around fast.
Your first-week setup checklist is helpful. I scheduled a staggered move with movers and packers .
Your Q&A on responsibility was crystal clear. trusted tree removal nearby possessed the right insurance coverage as well as recorded the entire process.
Useful advice! For more, visit Columbia auto glass installation .
I appreciated this article. For more, visit ferretería cerca de mí .
I appreciated learning about diffusion and units on botox near me before my session.
Well explained. Discover more at vet Fairview .
Thanks for the great content. More at PGE gasline sub contractor .
I’ve been researching the long-term effects of Botox and found this discussion super helpful. For anyone curious, I’ve shared my experience here: botox near me
Thanks for the great information. More at San Jose website design .
Fantastic blog post, I value the sincerity. I blogged about challenges at professional SEO services .
coastline access – Items loaded quickly and the layout is neat and tidy.
Great explanation of nerve pain after surgery. I managed it well with guidance from foot and ankle surgeon Springfield .
Appreciate the comprehensive insights. For more, visit Project 100 marketing consultant .
При помощи анализа своего дизайна люди развивают сильные стороны и прорабатывают слабости чтобы достичь личностного роста и развития. Постоянная занятость не гарантирует результата. Полный разбор с примерами и рекомендациями. Найдите сферу где ваши уникальные навыки будут признаны. Как получать деньги в свою жизнь без надрыва и сопротивления. В чем суть дизайна человека? https://kb-human-design-lu-ru-oms.hdea.ru
Appreciate the thorough insights. For more, visit https://www.google.com/maps/dir/water+Heating+Repair,+1275+Bayshore+Rd,+Villas,+NJ+08251,+United+States/Belasco+Plumbing+%26+Heating+Inc,+243+W+Oak+Ave,+Wildwood+Crest,+NJ+08260,+United+States/@39.0153446,-74.9162298,13z/data=!3m2!4b1!5s0x89c0a92b550f003f:0x158949a6404d302f!4m13!4m12!1m5!1m1!1s0x89c0aafcdac7d537:0x6ad44c03786c0cfb!2m2!1d-74.9332341!2d39.0260407!1m5!1m1!1s0x89c0a8301ee5c60b:0x8f8fc3b2ef7679fb!2m2!1d-74.816818!2d38.9926998!5m1!1e3?entry=ttu&g_ep=EgoyMDI1MDkxNy4wIKXMDSoASAFQAw%3D%3D .
Thanks for the thoughtful short article. For families beginning their look for assisted living, affordable memory care is a practical location to begin.
I’ve finally found a place that works—Pain Relief Centre is absolutely the best chiropractor near me in St Augustine! chiropractor
It’s refreshing witnessing communities coming together actively engaging concerning these topics surrounding roadways especially given current trends we’ve noted lately throughout local areas nearby each other—we can always make progress happen together!! Sacramento utility potholing
I appreciated this article. For more, visit extranjería en España procesos .
Wow. Tyle wiedzy w jednym miejscu. Mój mózg paruje, ale było warto. Dzięki! audyt seo home
a href=”https://brightnorthboutique.shop/” />northfashionhub – Items are easy to explore, interface is calm and organized.
This was very enlightening. For more, visit tienda online de colchones con envío gratis .
Carlsbad Roofing Contractor offers a wide range of roofing options, from traditional asphalt shingles to modern metal roofs, ensuring you find the perfect fit for your home. customer intent analysis for painting services
When I require junk elimination help again, I’ll definitely be calling # # anyKeyWord # #! dumpster rental
I’ve tried several places for Brazilian waxing in Las Vegas, but none compare to the service at Brazilian Waxing Las Vegas .
a href=”https://growyourmindset.click/” />mindsetzone – Layout is tidy, products are well displayed, and browsing feels natural.
The sauces look elegant, the area looks dynamic. Extra such as this on farm-to-table restaurant Loomis .
Love the reminder to review medical history each visit. I created a repeat-visit checklist new york botox
Orlando locals: get a driveway-riskless dumpster from orlando yard waste dumpster for your subsequent cleanout.
Excellent overview of commercial auto. I secured fleet quotes via Insurance agency near me for our small business.
This was very well put together. Discover more at air conditioning repair services Norfolk .
гы гы..вот такая вот история..мля купить скорость кокаин мефедрон гашиш Это фейк что тут вам не понятно то.Маловато по-моему у меня 1гр жвша растворяется полностью примерно в 30 мл меньше этого – частично
This was highly educational. For more, visit veterinarian services near me .
Промокод при регистрации 1xbet на 32500 рублей. Этот код нужно ввести при регистрации в соответствующее поле. Промокод действует однократно но им можно делиться с друзьями. Регистрация по номеру телефона — удобный способ создать аккаунт. После получения данных для входа остаётся лишь ввести логин и пароль. Используй актуальный 1хБет промокод и увеличь первый депозит до 32 500 рублей в БК 1xBet. На платформе действует система вознаграждений которая помогает игрокам получать до дополнительных процентов от первого депозита.
We’re comparing quotes for a full tear-off vs overlay. Transparency on scope and cleanup is key— affordable solutions near me has been responsive so far.
die buchmacher
my blog … wettanbieter paypal (Johnson)
Pine Point – Effortless browsing and clean product organization make shopping enjoyable.
The menu shows restriction and imagination– great balance. Saved to couples dinner Loomis .
I recently hired Tampa Bay Pressure Washing, and I cannot express how impressed I am with their services. From start to finish, the experience was seamless and professional. Pressure Washing Business Tampa Bay Pressure Washing
If you’re apprehensive approximately preservation, hexclad vs le creuset is night and day. Le Creuset necessities mushy care with tooth; HexClad wishes a little of oil for nonstick. More data on choosing between hexclad and le creuset .