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How can I make a div stick to the top of the screen once it's been scrolled to?
...cky, which is supported in Chrome, Firefox, and Safari. See the article on HTML5Rocks and demo, and Mozilla docs.
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Warn user before leaving web page with unsaved changes
...lly introduced by Microsoft in Internet Explorer 4 and standardized in the HTML5 specification.
– vee
Jul 9 '18 at 16:06
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HTML input - name vs. id [duplicate]
...es (_), dashes (-), colons (:), or periods (.)
Is case insensitive
In (X)HTML5, everything is the same except:
Name Attribute
Not valid on <form> anymore
XHTML says it must be all lowercase, but most browsers don't follow that
Id Attribute
Valid on any element
XHTML says it must be al...
iOS / Android cross platform development [closed]
...oid, iOS, webOS, and Windows Phone 7 devices. You can also output Flash or HTML5 for the web. The framework was originally developed for online multiplayer social games, such as poker and backgammon, and it suits 2D games and apps with complex logic. The framework supports 2D graphics and includes a...
Using “label for” on radio buttons
...t Martha has the right answer. Both of Martha examples are perfectly valid HTML5. And for example if You want the whole thing to be in a frame, it is easier to style second one using css. If You want labels to be somewhere else, first one. But both are OK. Best regards!
– Jacek...
float:left; vs display:inline; vs display:inline-block; vs display:table-cell;
...complex layouts, but this is still very much in development -- see http://html5please.com/#flexbox
Hope that helps.
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Media Queries: How to target desktop, tablet, and mobile?
...et devices, whether that's general wisdom or not. This is a good article: html5rocks.com/en/mobile/cross-device
– monalisa717
Aug 27 '14 at 16:43
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How to hide image broken Icon using only CSS/HTML?
...using of <object> tags instead of <img> tags. Is this approach HTML5-compliant and rendered correctly by all major browsers?
– Pieter
Apr 23 '16 at 10:16
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Can You Get A Users Local LAN IP Address Via JavaScript?
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As it turns out, the recent WebRTC extension of HTML5 allows javascript to query the local client IP address. A proof of concept is available here: http://net.ipcalf.com
This feature is apparently by design, and is not a bug. However, given its controversial nature, I wou...
Can multiple different HTML elements have the same ID if they're different elements?
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In HTML5, the spec for getElementById actually does define that the first element with the given ID must be returned (which is how all browsers currently handle the situation anyway) - see my answer below for more.
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