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.
Torentino.org — каталог игр для PS и ПК с удобной навигацией по жанрам: от спортивных и гонок до хорроров и RPG, с подборками «все части» и свежими релизами. В процессе выбора удобно перейти на http://torentino.org/ — там видны обновления по датам, рейтинги, комментарии и метки репаков от известных групп. Сайт структурирован так, чтобы быстро находить нужное: фильтры, год релиза, серии и платформы. Это экономит время и помогает собрать библиотеку игр по вкусу — от ретро-хитов до новых тайтлов.
x3165.xyz – Typography is clean, reading text was comfortable even on my phone.
Центр медицинского лицензирования Журавлев Консалтинг Групп помог получить лицензию медика под ключ все этапы сопровождались профессионально и без лишней бюрократии: https://licenz.pro/
sh576.xyz – A few internal links led to blank or error pages, needs cleanup.
9870k.top – Page load speed is okay generally, though heavy pages lag slightly.
7x084yko.xyz – The footer is minimal — adding some contact or link info would improve trust.
bestbotanicals – Love how easy it is to find rare plants here online.
3e7r – Customer support chat popped up quickly, they answered my query fast.
17kshu – I like the color scheme, subtle but pleasant to eyes.
51p31.xyz – Interesting domain name, gives a sense of hidden depth to explore.
storagesheds.store – A few images failed to load, hope those get fixed soon.
dersimizmuzik.org – Loading is smooth, pages open quickly which is nice for long reading.
yt7787.xyz – The color scheme is subtle yet effective; not too harsh on eyes.
bitcoin-mining-news.website – The font contrast is good; reading long posts isn’t tiring on eyes.
businessesnewsdaily.site – The news layout feels professional, useful stories are easy to find.
sxy005.xyz – The color palette is subtle and pleasant, not too overpowering.
52cjg.xyz – Load speeds are okay, though heavier pages lag on slower connections.
Hello team I came across a 138 helpful platform that I think you should check out. This platform is packed with a lot of useful information that you might find valuable. It has everything you could possibly need so be sure to give it a visit https://ms150biketour.org/betting-tips/live-sports-betting/ Additionally remember not to neglect folks which one at all times may inside this publication discover responses for your the very complicated queries. The authors made an effort to explain all information in the extremely easy-to-grasp way.
Ищете производителя светодиодных табло? Посетите сайт АльфаЛед https://ledpaneli.ru/ – компания оказывает полный комплекс услуг. Проектирование, изготовление, монтаж и подключение, сервисное обслуживание. На сайте вы найдете продажу светодиодных экранов, медиафасадов, гибких экранов уличных, для сцены, для рекламы, прокатных-арендных. Вы сможете осуществить предварительный расчет светодиодного экрана.
ylu555.xyz – Some pages are quite empty—more content would help boost engagement.
weopwjrpwqkjklj.top – on mobile the layout holds up quite well, with minor shifting of elements
Ищете все самые свежие новости? Посетите сайт https://scanos.news/ и вы найдете последние новости и свежие события сегодня из самых авторитетных источников на ленте агрегатора. Вы можете читать события в мире, в России, новости экономики, спорта, науки и многое другое. Свежая лента новостей всегда для вас!
Looking for reviews and sailing itineraries for skippers? Visit https://sailors.tips to plan your sailing itineraries and discover landmarks around the world. We provide detailed information on marinas, nearby attractions, reliable yachts, and local marine shops. Learn more on the website.
Its like you read my mind You appear to know so much about this like you wrote the book in it or something. I think that you can do with a few pics to drive the message home a bit but other than that this is excellent blog. A fantastic read. Ill certainly be back. keepstyle
formasecoarquitectonicas – Clean font and layout, though some parts look unfinished or sparse.
Read this article and couldn’t keep it to myself—check it out http://school8kaluga.flybb.ru/viewtopic.php?f=19&t=1168
Plinko plinko plinko game plinko casino plinko 1win plinko strategy best plinko strategy plinko online plinko gambling plinko betting plinko slot plinko win plinko bonus plinko app plinko demo plinko free plinko play online plinko game strategy plinko casino game plinko pattern plinko tricks plinko betting strategy
xxec – Found a couple of useful resources, thanks for putting this together.
fartak – Very nice site overall, I’ll bookmark it for later visits.
xxgm – Solid site, glad I came across it while browsing today.
forextradingsystem – Love the content here, very straightforward and helpful for beginners.
Only-Paper — это магазин, где бумага становится инструментом для идей: дизайнерские и офисные бумаги, картон, упаковка, расходники для печати, лезвия и клей — всё, чтобы макеты превращались в впечатляющие проекты. Удобный каталог, фильтры по плотности и формату, консультации и быстрая отгрузка — экономят время студий и типографий. Откройте ассортимент на https://only-paper.ru — сравните параметры, добавьте в корзину и доверьте деталям текстуру, от которой ваш бренд будет звучать убедительнее на витрине и в портфолио.
axjaognr – Interesting domain name, makes me curious what they sell behind it.
probuis – Found no social links yet, hope they include them later.
set-mining.website – I couldn’t find much info, site looks new and content is scarce.
aaront – On mobile it renders well, layout adjusts nicely.
hhproduction – I’m curious about their service pricing, hope they share more soon.
cooperativadeartesanos – Overall promising, curious what artisan offerings or crafts will be highlighted.
t371 – Navigation is pretty straightforward, found things without hassle.
giftd – The homepage layout feels balanced and easy to follow.
Актуальные новости автопрома https://myrexton.ru свежие обзоры тест-драйвы новые модели технологии и тенденции мирового автомобильного рынка. Всё самое важное — в одном месте.
Строительный портал https://stroimsami.online новости инструкции идеи и лайфхаки. Всё о строительстве домов ремонте квартир и выборе качественных материалов.
Новостной портал https://daily-inform.ru с последними событиями дня. Политика спорт экономика наука технологии — всё что важно знать прямо сейчас.
fortressystemnig – Very clean website, layout gives a professional impression.
sddapp – Wish there were images or graphics to brighten up the pages.
wbb6e – Viewing on mobile looks decent, interface is not cluttered.
pakopakoma – The pages load decently fast on my phone, good sign.
creadordesitios – Navigation is intuitive, I quickly found what I was looking for.
av07 – Some images are low resolution, might want to improve that.
Велосипеды для комфортных прогулок на природе kra40cc kraken ссылка тор kraken ссылка зеркало kraken ссылка на сайт