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What about AngularJS :<br />
<a href="https://angularjs.org/" rel="ugc">https://angularjs.org/</a><br />
RoR:<br />
<a href="http://angular-rails.com/front.html" rel="ugc">http://angular-rails.com/front.html</a><br />
ASP.NET :<br />
<a href="http://www.asp.net/web-api/tutorials/hands-on-labs/build-a-single-page-application-(spa)-with-aspnet-web-api-and-angularjs" rel="ugc">http://www.asp.net/web-api/tutorials/hands-on-labs/build-a-single-page-application-(spa)-with-aspnet-web-api-and-angularjs</a>
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What about AngularJS :
https://angularjs.org/ [https://angularjs.org/]
RoR:
http://angular-rails.com/front.html [http://angular-rails.com/front.html]
ASP.NET :
http://www.asp.net/web-api/tutorials/hands-on-labs/build-a-single-page-application-(spa)-with-aspnet-web-api-and-angularjs [http://www.asp.net/web-api/tutorials/hands-on-labs/build-a-single-page-application-(spa)-with-aspnet-web-api-and-angularjs]

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I'm just jumping into the JavaScript universe. My apologies if the question illustrates my ignorance with the topic. I'm about to create my first full-blown web-based app. My long-standing municipal client recognizes that the technology is new to me and my hourly rate to build the app will reflect this. <br />
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My goal, long term, is to create MVC applications using PostgreSQL, RoR, and a solid JavaScript framework. All three, in candor, are new technologies to me. 
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With this project, however, I'm wedded to Microsoft. The application will reside on my municipal client's web-server running MSSQL and ASP.NET. It's worth noting that I know MSSQL like the back of my hand and I'm solid with ASP.NET
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Here's my question: Are there JavaScript frameworks available that <u>reasonably interface with both ASP.NET and RoR</u>? Rather than learning two JavaScript frameworks, I'd like to learn just one, and learn it well.
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I'm just jumping into the JavaScript universe. My apologies if the question illustrates my ignorance with the topic. I'm about to create my first full-blown web-based app. My long-standing municipal client recognizes that the technology is new to me and my hourly rate to build the app will reflect this. 

My goal, long term, is to create MVC applications using PostgreSQL, RoR, and a solid JavaScript framework. All three, in candor, are new technologies to me. 
With this project, however, I'm wedded to Microsoft. The application will reside on my municipal client's web-server running MSSQL and ASP.NET. It's worth noting that I know MSSQL like the back of my hand and I'm solid with ASP.NET

Here's my question: Are there JavaScript frameworks available that reasonably interface with both ASP.NET and RoR? Rather than learning two JavaScript frameworks, I'd like to learn just one, and learn it well.

Looking JavaScript Frameworks that can interface with ASP.NET/MSSQL or PostgreSQL/RoR

JavaScript is a dynamic, object-based language commonly used for client-side scripting in web browsers. Recently, server side JavaScript frameworks have also emerged. JavaScript runs on nearly every operating system and  in almost every mainstream web browser.

JavaScript

A web application framework (WAF) is a software framework that is designed to support the development of dynamic websites, web applications, web services and web resources. The framework aims to alleviate the overhead associated with common activities performed in web development. Most common web application frameworks are defined by specific subsets, including ASP.NET, JaveEE, Symfony, ColdFusion Language (CFML), Laravel, jQuery and AngularJS, or for the related languages, including .NET, PHP, JavaScript, Java, Perl, Python, Ruby, C++ and C.

Web Frameworks

Asynchronous JavaScript and XML (AJAX) is a group of interrelated Web development techniques used on the client-side to create asynchronous Web applications. With AJAX, web applications can send data to and retrieve from a server asynchronously (in the background) without interfering with the display and behavior of the existing page. HTML and CSS can be used in combination to mark up and style information. The Document Object Model (DOM) is accessed with JavaScript to dynamically display and allow interaction with the information presented.