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Firefox ignores option selected=“selected”

...is selected. Strange (non conformant) behaviour. I know selected is valid HTML5 and it's the shortest form, but I usually write code that also validates as wellformed XML, so that I can use any XML validation tool to check my results in a very strict way (and data exchange is very easy...) Accordi...
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Canvas width and height in HTML5

Is it possible to fix the width and height of an HTML5 canvas element? 4 Answers 4 ...
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Center HTML Input Text Field Placeholder

... The HTML5 placeholder element can be styled for those browsers that accept the element, but in diferent ways, as you can see here: http://davidwalsh.name/html5-placeholder-css. But I don't believe that text-align will be interpr...
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What are the functional differences between NW.js, Brackets-Shell and Electron?

...ree of them platforms - runs on Windows, Mac, and Linux language support - HTML5, CSS3 and Javascript : since they run javascript you can download and run nearly any library/framework that you want. The big caveat on webkit is codec support. Typically you will have problems with non-free video cod...
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How to calculate md5 hash of a file using javascript

...y. You got basic usage and examples in the readme. Be aware that you need HTML5 FileAPI, so be sure to check for it. There is a full example in the test folder. https://github.com/satazor/SparkMD5 share | ...
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How to find if div with specific id exists in jQuery?

...st simple way is.. if(window["myId"]){ // .. } This is also part of HTML5 specs: https://www.w3.org/TR/html5/single-page.html#accessing-other-browsing-contexts#named-access-on-the-window-object window[name] Returns the indicated element or collection of elements. ...
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How to use the “required” attribute with a “radio” input field

I am just wondering how to use the new HTML5 input attribute "required" in the right way on radio buttons. Does every radio button field need the attribute like below or is it sufficient if only one field gets it? ...
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HTML5 Canvas Resize (Downscale) Image High Quality?

I use html5 canvas elements to resize images im my browser. It turns out that the quality is very low. I found this: Disable Interpolation when Scaling a <canvas> but it does not help to increase the quality. ...
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How to export JavaScript array info to csv (on client side)?

...!== undefined) { // feature detection // Browsers that support HTML5 download attribute var url = URL.createObjectURL(blob); link.setAttribute("href", url); link.setAttribute("download", filename); link.style.visibility = 'hidden'; ...
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Using HTML5/Canvas/JavaScript to take in-browser screenshots

Google's "Report a Bug" or "Feedback Tool" lets you select an area of your browser window to create a screenshot that is submitted with your feedback about a bug. ...