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.
FashionHub Fresh – Eye-catching visuals and neatly arranged items create a pleasant browsing journey.
Historic flags can serve as reminders of past struggles for freedom and independence, making them useful symbols nowadays! Explore this at order military flags .
This was very enlightening. For more, visit derecho penal Coruña .
Helpful reminder to avoid admitting fault at the scene. georgia injury attorney provides great advice on what to say.
Estate planning for unmarried partners in Florida needs attention. Solutions at heath wealth management estate planning .
If you wish to look a head-to-head cooking examine among Cookcell and Hexclad, payment out the consequences here: cookcell vs hexclad comparison .
Backflow prevention is critical for safe water. When our sprinkler system failed its test, plumber near me sent a certified tester to repair the RPZ assembly and file compliance paperwork.
Посетите https://accs-shop.com/ – это Магазин аккаунтов №1 с многолетним опытом работы, в котором вы сможете купить аккаунты в широком ассортименте. Посмотрите категории – там вы обязательно найдете для себя необходимый товар. Каждый аккаунт проходит тщательную проверку перед продажей, вы можете быть уверены в качестве, а поддержка работает быстро!
Good to understand about trustworthy force-away occasions. west columbia auto glass gave a clear timeline until now handing lower back the keys.
Game-Lands https://game-lands.ru/ – это сайт с подробными гайдами и прохождениями для новичков и опытных игроков. Здесь вы найдете лучшие советы, топовые билды и сборки, точное расположение предметов, секретов, пасхалок, и исправление багов на релизах. Узнаете, как получить редкие достижения, что делать в сложных моментах и с чего начать в новых играх. Всё, чтобы повысить скилл и раскрыть все возможности игровых механик.
Ищете просмотры вк накрутка на видео? Сервис seoprofi.org специализируется на безопасной накрутке просмотров для Rutube и VK Видео, а также увеличении посещаемости сайтов с помощью живого трафика. Система гарантирует равномерное увеличение метрик с органичным удержанием в диапазоне 40-80%, способствуя продвижению материалов в рекомендательные ленты и повышению ранжирования без угрозы санкций. Ценовая политика начинается с 1200 рублей за тысячу единиц посещений, старт проектов осуществляется за 1-3 часа при наличии поддержки 24/7.
Bounce houses add so much joy to parties! Found some amazing ones at driveway pressure washing near me .
Ищете тибетская музыкальная чаша купить? Terapiazvu.com предлагает обучение вибро-акустическому массажу тибетскими поющими чашами ручной работы с применением методов резонансно-акустической терапии. Опытные преподаватели организуют двухуровневые курсы по освоению звукотерапии, консультируют при выборе персональной чаши в онлайн-режиме и гарантируют бесплатную пересылку товара по стране. Звуковые практики с тибетскими чашами эффективно снимают стресс, восстанавливают энергетический баланс организма и помогают в решении психосоматических проблем.
Fresh Season Corner – Seasonal products arranged neatly with smooth navigation and quick load times.
This was highly informative. Check out water damage restoration companies for more.
Thanks for covering maintenance! Shade structures live or die by fabric quality and hardware. If you’re looking for a quick selector tool by climate, snow load, and sun angle, you might find this useful: pergola builder .
Fantastic post! Discover more at cash advances .
Solid assistance on backlog prioritization. At erp consulting services , we use price scoring to align delivery with industrial pursuits.
StoneBridge Mart – Clean interface, smooth navigation, items clearly displayed.
CoolSculpting treatment is the perfect solution for those looking to contour their body without surgery. Visit best med spa in Lubbock TX to learn more about this revolutionary treatment.
Valuable information! Find more at tratamientos anticaída Jaén .
If you used a rental car, auto accident lawyer explains CDW and liability coverage.
Unique Gift Picks Hub – Loved the assortment, moving through sections felt effortless.
Языковой образовательный центр в Алматы и Атырау предлагает современное обучение английскому и другим языкам по доступным ценам для взрослых и детей любого уровня подготовки. Эффективные методики развития устной речи, грамматики и лексики реализуют дипломированные преподаватели с богатым опытом работы. Подробная информация о программах представлена на сайте https://www.ctgroup.kz/ Учебное заведение организует коллективные курсы численностью до 6 учащихся и персональные занятия в технологичных классах с обеспечением сопровождения до получения целевого балла.
Just wished to percentage how inspired I am with the speed shipping of my order from buy nangs in Melbourne !
Well done! Find more at auto glass shops nearby .
Dental implants look and feel just like real teeth! Check out the benefits at dental implants .
For meal prepping, a avoid-heat feature that doesn’t dry rice is foremost. I found out a few risk-free selections on best rice makers for home that prevent texture greatest for hours.
Roof edge metal makes a difference. trusted local plumber upgraded ours and improved drainage.
Evaluating fire damage restoration near me that handles fine soot on furniture. Found water damage restoration near me during search.
Trend Corner Finds – Pages loaded quickly with attractive presentation of stylish items.
Mi arıyorsunuz guvenilir casino siteleri? Sekabet Casino’ya Türkiye’den güvenle ulaşmak, üyelik ve finans işlemleri rehberini görmek ve en iyi geliştiricilerin oyunları ile spor bahislerini incelemek için villaperret26.com adresine göz atın. Promosyonlarımız ile bonuslarımız, kullanıcılar için yüksek değerli ödül sistemi sunar. Uygulamamız mobilde her an erişilebilir; kullanımı pratik ve tüm cihazlarla uyumlu.
The exterior prep—scrape, sand, seal—is textbook. Precision conclude reliable painter workflow at certified painting contractor .
The stories behind famous grave sites can be quite captivating! I enjoy researching them on platforms like Charlotte grave marker company .
Well done! Discover more at affordable auto glass in Sanford NC .
diamondfieldhub market – Good browsing flow; items show clear effort in presentation and reliability.
Appreciate the detailed information. For more, visit postoperatorio injerto capilar .
VIP ESCORT SERVICE Escort agency – VIP escorts elite escort
Anyone here completed a solar panel installation near me in La Mesa recently? Curious about timelines, permitting experience, and inverter brands used. I’m also exploring long-term maintenance options. I’m reviewing details on solar panel warranty repair .
Iron Root Picks – Store selection looks strong, browsing is simple and efficient.
Nice reminder to optimize for featured snippets with concise answers. SEO-friendly web design
Great overview of aluminum framing benefits. For metal framing projects, Charlotte Deck Builder is equipped.
Embracing nature’s beauty creates spaces where families gather comfortably across seasons alike ; take steps forward now ! Seek guidance shared amongst talented professionals facilitating growth through connection established using # local landscaping services
daily growth finds – Products seem useful and well arranged, browsing feels enjoyable.
Exploring lake geneva became even more memorable due largely because i opted for o’hara limo services during my adventure!!! #]# luxury O’Hare limo service
Great illustration of snow load considerations. highly rated shed builders Tacoma sized my rafters properly.
ETNA https://www.etnasoft.com/ is a white-label fintech platform for broker-dealers and RIAs offering integrated trading, wealth management, and back-office solutions. Features include multi-asset trading, automated portfolio rebalancing, compliance automation, mobile apps, and 20+ custodian integrations. The platform deploys in two weeks, supports complete brand customization, and scales from startups to established firms managing billions in assets.
daily power picks – Selection seems uplifting, site layout feels clean and easy.
Your maintenance tips reduced my energy bill last month. Thank you for sharing! Boiler Repair
I’ve seen so many positive testimonials about American Laser Med Spa’s laser hair removal treatment—definitely considering it! best non-surgical liposuction clinic