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Do any of the commonly used screen readers emit browser events that can be scripted with javascript?
Or, are there current or planned javascript APIs to communicate with screen readers in the same way there are now APIs for working with other OS level systems (cameras, GPS, etc.)?
A similar question from three years ago (Evaluating current state of a screen reader in JavaScript) produced a definitive "NO" answer. Has anything changed since then?
I believe, it's still a No, but the closest to your request is the (drafted) Accessibility Object Model. It does not allow to interact with screen readers directly (it seems), but it does allow to manipulate the accessibility tree in a browser.
Currently supported at least in Chrome Canary via a command-line flag.
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The topic is about system fonts. what is the purpose of setting button {font:caption;}? system-fonts
The question asks what is the purpose of setting button {font:caption;}
The system the user is on (normally a browser like Chrome or Safari together with their device's operating system and related storage) will itself have styles for various different items.
In this case the question is about 'caption' - when used as font:caption as above it is saying to the browser when you see a button element in my HTML please use the same font that you would use to show a button.
This means you can have a website which blends in with the look that the user is used to - buttons (and other things depending on what else you set) will look the same as system ones - in this case at least as far as the font goes.
See https://developer.mozilla.org/en-US/docs/Web/CSS/font for information on what other in-built system formatting can be used.
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I am working on a new project which involves building a chat window. Normally, I would have no hesitation in using Flexbox for this project, however, a requirement of this project is that I support IE9.
I know that using tools like Modernizr can provide a fallback, but if I need to support this anyways is there much advantage of using this method?
No. Not worth it. You'll wind up doing everything twice to get the fallback support, so spend your effort doing it once, fully compatible with the oldest browser you need to support.
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This might be considered a very broad question but, I am trying to introduce speech into a web application built using Flex API.
My initial plan is to introduce something like the Google homepage with a text box and a mic icon which will trigger the speech api on click.
Having done research, I havent found a way yet.
Google speech API is implemented in browser on client side in javascript, the detailed documentation is here.
To communicate between javascript and flex you can use ExternalInterface
Similar question is How can I have HTML5 FileApi Support in Flex?
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I see JavaFX and Vaadin very similar except for the fact that JavaFX requires Java plugin in the browser. But otherwise it seems to offer the same capabilities. Why should I prefer Vaadin to JavaFX? Is there any case when Vaadin is a better solution?
You pretty much answered it yourself. You just need to look into it a bit more. Chrome started to disable their Java related plugins which will eventually push those apps off the shelf. Who knows when/if the other browsers follow that trend.
Chrome starts pushing Java off the web
Vaadin offers many features that you can easily see for yourself in their demo section. And it's in pure Java. It's still a young technology apparently, give or take 8 years old.
I'm not gonna give my personal opinion because this is not the place but I wished you would've just googled this simple query:
Vaadin vs. JavaFX
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I've heard that Microsoft has unleashed a windows 8 style (previously known as metro) API for ASP.NET
Does anyone knows anything about it? What is it called? Where to get it from?
Unfortunately I don't have any link about that API. I've tried searching for it but didn't get any luck.
I have found some JQuery APIs, but I'm asking about the one done by Microsoft itself. Is there any?
I was hoping that there's a simple way of creating "metro look" without having to reinvent any wheel (if there's already an API for it)
That's not called an API, that's ususally called a theme: a set of stylesheets and images.
I think you are looking for Metro UI CSS. It's got little to do with Microsoft though.