server-side javascript is when the application written in Javascript is run as a server handling requests.
Javascript is a language, and as such can be used to do a lot of things - you can make a drawing application w/ javascript on the client, and you can also make a program that receives web requests, processes them, and returns a response back to the requester. The javascript engine is what executes the javascript code. So, you need an engine to run the program written in javascript. Without something to run javascript, javascript is just a weird looking text file. So, the popular framework node.js uses the V8 Javascript engine as its runtime. Think of it as the JVM - Oracle's JVM is akin to Google's V8 Javascipt Engine. So: Javascript Engine (like V8) ~ Oracle's JVM node.js ~ Java SE or EE (framework w/ lots of libraries + plugins) Express for node.js ~ grails, Spring MVC socket.io ~ netty, spring WS, Servlet 3.0 I hope that helps. -- Anatoly Geyfman http://www.geyfman.net On Saturday, August 20, 2011 at 9:08 PM, Rahul wrote: > Ok , now i understood that Javascript engine is used in browser to > execute loaded javascript faster. > > But than what does Server-side javascript mean ? and how it has to do > any thing with Javascript engine ? > > On Aug 21, 4:52 am, Laurie Harper <[email protected] (http://web.net)> wrote: > > Oops; appologies to the list for such a Node-centric reply. > > > > To be clear: Node is by no means the only server-side Javascript platform; > > there are others. I assume the reference to "Node: Up and Running" is an > > indication that that's what the OP is looking at though ;-) > > > > L. > > > > On 2011-08-20, at 7:50 PM, Laurie Harper wrote: > > > > > > > > > > > > > > > > > > > > > Specifically, in your frame of reference: the Javascript Engine is > > > roughly equivalent to the Java Virtual Machine (JVM) -- i.e. the > > > component that handles compiling/evaluating your code. > > > > > Tomcat is an application written in Java which implements the Servlet > > > API. For web application development in Javascript using Node, the > > > Express framework [1] is probably the most popular. It isn't a direct > > > equivalent to the Servlet API (the approach is quite different) but it > > > lives at the same level in the application stack. > > > > > Server-side Javascript doesn't, in and of itself, give you anything > > > specific to auto-updating web pages; that's something you have to > > > implement on top of HTTP, same as with any other server-side technology. > > > However, socket.io (http://socket.io) [2] is a very popular project which > > > makes it particularly easy to accomplish such things with Node. > > > > > Finally, note that Node is a more platform than just a web server. You > > > can use it to accomplish any programming task, but it particularly excels > > > at anything requiring a lot of concurrent IO. > > > > > I haven't read the book you referenced, but I'm sure it would be a great > > > way to improve your understanding of what Node is and how you might use > > > it. > > > > > L. > > > > > On 2011-08-20, at 1:58 PM, Amit Agarwal wrote: > > > > > > Javascript engine is the part of a browser which is responsible for > > > > executing loaded Javascript code. Better your JS engine executes JS > > > > faster. > > > > > > Details? > > > > http://en.wikipedia.org/wiki/JavaScript_engine > > > > > > Example? > > > > http://www.youtube.com/watch?v=KTkTBKSnqbA > > > > > > On Sat, Aug 20, 2011 at 6:59 PM, Rahul <[email protected] > > > > (http://gmail.com)> wrote: > > > > I searched on Wikipeidia , but i didn't understood the explanation. > > > > > > Many article says that Javascript engine is used for "Javascript Web > > > > server", > > > > > > But how come web server ? > > > > > > I have worked on Tomcat server and having knowledge of J2EE framwork, > > > > here a browser send request using a url, now this request hits the web > > > > container(Tomcat), > > > > now webcontainer creates req. and res. object and passes it to > > > > servlets deployed in webcontainer. > > > > > > Now from my above knowledge of Webcontainer can you please explain how > > > > come javascript be > > > > a web container, and how does it helps us in client-side javascript > > > > > > Does javascript engine has anything to do with auto-refresh of > > > > webpages, like live scores of sports or stock prices listing , > > > > something like this sort. > > > > > > Can you please suggest some books on javascript engine or Javascript > > > > webserver, > > > > > > Can O'really's Node: Up and running will be helpfull reading, > > > > > > Wating for a reply > > > > > > -- > > > > To view archived discussions from the original JSMentors Mailman list: > > > > http://www.mail-archive.com/[email protected]/ > > > > > > To search via a non-Google archive, visit > > > > here:http://www.mail-archive.com/[email protected]/ > > > > > > To unsubscribe from this group, send email to > > > > [email protected] > > > > (mailto:[email protected]) > > > > > > -- > > > > To view archived discussions from the original JSMentors Mailman list: > > > > http://www.mail-archive.com/[email protected]/ > > > > > > To search via a non-Google archive, visit > > > > here:http://www.mail-archive.com/[email protected]/ > > > > > > To unsubscribe from this group, send email to > > > > [email protected] > > > > (mailto:[email protected]) > > > > > -- > > > Laurie Harper > > > http://laurie.holoweb.net/ > > > > > -- > > > To view archived discussions from the original JSMentors Mailman list: > > > http://www.mail-archive.com/[email protected]/ > > > > > To search via a non-Google archive, visit > > > here:http://www.mail-archive.com/[email protected]/ > > > > > To unsubscribe from this group, send email to > > > [email protected] > > > (mailto:[email protected]) > > > > -- > > Laurie Harperhttp://laurie.holoweb.net (http://web.net)/ > > -- > To view archived discussions from the original JSMentors Mailman list: > http://www.mail-archive.com/[email protected]/ > > To search via a non-Google archive, visit here: > http://www.mail-archive.com/[email protected]/ > > To unsubscribe from this group, send email to > [email protected] > (mailto:[email protected]) -- To view archived discussions from the original JSMentors Mailman list: http://www.mail-archive.com/[email protected]/ To search via a non-Google archive, visit here: http://www.mail-archive.com/[email protected]/ To unsubscribe from this group, send email to [email protected]
