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Is the 'type' attribute necessary for tags?

... in HTML5 you do not need the type attribute, but in HTML<=4 and (X)HTML it should be declared share | improve this answer ...
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Drawing an SVG file on a HTML5 canvas

Is there a default way of drawing an SVG file onto a HTML5 canvas? Google Chrome supports loading the SVG as an image (and simply using drawImage ), but the developer console does warn that resource interpreted as image but transferred with MIME type image/svg+xml . ...
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HTML5 Canvas vs. SVG vs. div

...e (object selection, etc) yourself, or use a library. The long answer: HTML5 Canvas is simply a drawing surface for a bit-map. You set up to draw (Say with a color and line thickness), draw that thing, and then the Canvas has no knowledge of that thing: It doesn't know where it is or what it is ...
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Placeholder in IE9

... HTML5 Placeholder jQuery Plugin - by Mathias Bynens (a collaborator on HTML5 Boilerplate and jsPerf) https://github.com/mathiasbynens/jquery-placeholder Demo & Examples http://mathiasbynens.be/demo/placeholder p.s I h...
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Is it necessary to write HEAD, BODY and HTML tags?

...mization and scannability purposes, consider omitting optional tags. The HTML5 specification defines what tags can be omitted. (This approach may require a grace period to be established as a wider guideline as it’s significantly different from what web developers are typically taught...
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Can you nest html forms?

... can have several forms in a page but they should not be nested. From the html5 working draft: 4.10.3 The form element Content model: Flow content, but with no form element descendants. share | ...
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Why shouldn't `'` be used to escape single quotes?

... FYI: HTML5 does support both entities – Tarol Jun 9 at 13:24 add a comment  |  ...
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How do I make a transparent canvas in html5?

How can I make a canvas transparent? I need to because I want to put two canvases on top of one another. 6 Answers ...
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html5 localStorage error with Safari: “QUOTA_EXCEEDED_ERR: DOM Exception 22: An attempt was made to

My webapp have javascript errors in ios safari private browsing: 15 Answers 15 ...
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Can I add a custom attribute to an HTML tag?

.... it can put your document into quirksmode rendering. At any rate, use the HTML5 doctype and you'll be valid. – brentonstrine Aug 22 '13 at 19:39 ...