Solved

Javascript version 1.8

Posted on 2013-06-24
6
317 Views
Last Modified: 2013-07-05
Hello,
Is it possible to identify what version the javascript is being programmed by looking at the web page source code?  I would think that knowing of a certain construct used in version 1.8 and that construct being used on that web page, that one could determine what version was being used.
Is there an easier way?

Also,
How much information can be gather from a statement like this;
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

I see that the DTD is xhtml, but is there more?
0
Comment
Question by:chima
6 Comments
 
LVL 6

Expert Comment

by:Manuel Marienne-Duchêne
ID: 39273890
may be you want to talk Jquery a librairy for javascript :

http://jquery.com/
0
 
LVL 83

Assisted Solution

by:Dave Baldwin
Dave Baldwin earned 125 total points
ID: 39273909
You can see the version of the jQuery library in the source code of a page.  But javascript itself is part of the browser and is not generally available separately and neither is the version of it.  Current versions of javascript in browsers are based on ECMAscript.  More info here: https://en.wikipedia.org/wiki/ECMAScript
0
 
LVL 53

Assisted Solution

by:Julian Hansen
Julian Hansen earned 75 total points
ID: 39273916
I am assuming you mean JQuery not Javascript

You can check the version like so
var ver = $().jquery;
alert (ver);

Open in new window

0
Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

 
LVL 35

Assisted Solution

by:Robert Schutt
Robert Schutt earned 150 total points
ID: 39274071
Assuming you do mean javascript, seems the way to do it is to include the version in the script tag so it's clear for people (and browsers), as shown here: https://developer.mozilla.org/en-US/docs/Web/JavaScript/New_in_JavaScript/1.8 

I'm not sure what is supposed to happen when a browser doesn't support the new version, probably ignore the entire script block.
0
 
LVL 9

Accepted Solution

by:
Sar1973 earned 150 total points
ID: 39274274
Are you looking for navigator properties? See http://www.w3schools.com/js/tryit.asp?filename=try_nav_all
0
 
LVL 53

Assisted Solution

by:Julian Hansen
Julian Hansen earned 75 total points
ID: 39274420
Having re-read your question
s it possible to identify what version the javascript is being programmed by looking at the web page source code?
Are you asking what version the author decided to use or what version is supported by the browser?
From the rest of your question it seems you are trying to work out something about the page and how it was developed.

Maybe tell us what it is you are trying to do - why you need this information - and we might be better able to help you.
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
css, html 5 18
Form Submit falis 6 27
Javascript to allow login/password authorization 4 31
two layers of simple javascript validation 2 30
Boost your ability to deliver ambitious and competitive web apps by choosing the right JavaScript framework to best suit your project’s needs.
This article explains how to prepare an HTML email signature template file containing dynamic placeholders for users' Azure AD data. Furthermore, it explains how to use this file to remotely set up a department-wide email signature policy in Office …
The viewer will learn how to create and use a small PHP class to apply a watermark to an image. This video shows the viewer the setup for the PHP watermark as well as important coding language. Continue to Part 2 to learn the core code used in creat…
The viewer will learn the basics of jQuery including how to code hide show and toggles. Reference your jQuery libraries: (CODE) Include your new external js/jQuery file: (CODE) Write your first lines of code to setup your site for jQuery…

863 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

22 Experts available now in Live!

Get 1:1 Help Now