session variables are stored on the server, and therefore can persist across multiple requests. JavaScript variables don't really persist beyond a single page request (AJAX notwithstanding). You can set global JS variables that any script block or function on -that- particular page request can access. But if you're looking to set a single JS variable once and dereference it across multiple page requests, that's not really how JavaScript works. It's a client side technology.
On Tue, Apr 7, 2009 at 1:22 PM, Rick Faircloth <r...@whitestonemedia.com>wrote: > > I am using ColdFusion on the backend to set session variables > when I need something I can use everywhere. > > I just thought there might be something similar than I could > employ in Javascript. > > > -----Original Message----- > From: jquery-en@googlegroups.com [mailto:jquery...@googlegroups.com] On > Behalf Of Ricardo > Sent: Tuesday, April 07, 2009 4:08 PM > To: jQuery (English) > Subject: [jQuery] Re: How do I access global variables for id's, etc.? > > > If you are setting the value of the variable in a script tag in the > head like that, why not just use your server-side language? The part > of JS in the page is to *interact* with the DOM after it's loaded, > like someone said it's not a templating language. > > On Apr 7, 3:52 pm, "Rick Faircloth" <r...@whitestonemedia.com> wrote: > > Actually, I didn't get what I thought. > > > > The various sections of code without line breaks were bumping into each > > > > other making it look like the code was working! Sorry! > > > > This doesn't work: <p>gNewStoryID = <script>gNewStoryID</script></p> > > > > It would be nice if I could just stick a "$" on the front of a string and > > have > > > > jQuery parse it as a variable; id="$gNewStoryID". That would be as > > convenient > > > > as session variables in ColdFusion! Define once, user anywhere! > > > > No more extra functions just to change an attribute to a different value. > > > > Rick > > > > From: jquery-en@googlegroups.com [mailto:jquery...@googlegroups.com] On > > Behalf Of Rick Faircloth > > Sent: Tuesday, April 07, 2009 2:18 PM > > To: jquery-en@googlegroups.com > > Subject: [jQuery] Re: How do I access global variables for id's, etc.? > > > > Surprisingly, it did work. > > > > I ran this code on an otherwise blank page (no doctype, etc.): > > > > <script type="text/javascript" src="jquery.js"></script> > > > > <script> > > > > var gNewStoryID = 2 > > > > </script> > > > > <p>This is a paragraph of text. Inside this text I want to embed the > value > > > > of the global variable gNewStoryID, which is > > <script>document.write(gNewStoryID);</script>, isn't it?</p> > > > > And, in FF 3, I get: > > > > This is a paragraph of text. Inside this text I want to embed the value > > > > of the global variable gNewStoryID, which is 2, isn't it? > > > > So, there you go! > > > > Concerning the alternative. yes, I realize that the typical way of doing > > this "insertion" > > > > is to use JS to generate the values or HTML etc., and I have been doing > that > > with jQuery. > > > > I thought I would just see if there wasn't a way to "free" some of these > > variables from > > > > the constant manipulation via JS. > > > > Sure seems like JS could benefit from some way to refer to the value of > > these variables > > > > apart from simply writing more code. > > > > But let me know if you get that first example above to work for you. The > > examples of > > > > how to inject HTML with the variables are fine, but they're actually > more > > code than > > > > just a line of jQuery inside a function. > > > > I'm just trying to figure out ways to cut down on the amount of code that > > has to > > > > clutter up a page. > > > > Rick > > > > From: jquery-en@googlegroups.com [mailto:jquery...@googlegroups.com] On > > Behalf Of Michael Geary > > Sent: Tuesday, April 07, 2009 1:23 PM > > To: jquery-en@googlegroups.com > > Subject: [jQuery] Re: How do I access global variables for id's, etc.? > > > > > I'm able to output a global variable value like this: > > > <p>The value of myGlobalVariable is > <script>myGlobalVariable</script>.</p> > > > > Huh? What browser does that work in? HTML isn't a templating language, > and > a > > <script> tag doesn't do a text replacement of the script's return value, > it > > just runs the script. You didn't actually get this to work, did you? > > > > > I would like to be able to do something as simple as > > > <p id="<script>myGlobalVariable</script>">xyz</p>, > > > but apparently the "" marks are a problem. > > > > Whoa cowboy, that's even farther from anything you could ever actually > do: > > you're trying to nest an HTML tag inside the attribute of another tag. > > > > Instead, the way you do stuff like this is to write JavaScript code that > > generates the HTML or DOM elements. > > > > For example, during page loading (not in a document ready function), you > can > > use document.write(): > > > > <script type="text/javascript"> > > // myGlobalVariable has been previously defined > > document.write( '<p id="', myGlobalVariable, '">xyz</p>' ); > > </script> > > > > That works with local variables as well, of course. > > > > <script type="text/javascript"> > > (function() { > > var foo = someFunction(); > > document.write( '<p id="', foo, '">xyz</p>' ); > > })(); > > </script> > > > > Or, in jQuery you can do things like this: > > > > <script type="text/javascript"> > > $(function() { > > $('#someContainer').html( > > $('<p>xyz</p>').attr({ id: myGlobalVariable }) > > ); > > }); > > </script> > > > > Alternatively, there are several JavaScript-based template systems, from > the > > very simple to the rather complex. They may let you code in a style > closer > > to what you're hoping to use. > > > > -Mike > > > > _____ > > > > From: Rick Faircloth > > > > I would like to be able to do something as simple as > > > > <p id="<script>myGlobalVariable</script>">xyz</p>, > > > > but apparently the "" marks are a problem. > > > > I'm able to output a global variable value like this: > > > > <p>The value of myGlobalVariable is > <script>myGlobalVariable</script>.</p> > > > > Is there some way to use global variable values with an id attribute? > > > > Thanks, > > > > Rick > > > > > > ---------------------------------------------------------------------------- > > ----------------------------------------------------------- > > > > "It has been my experience that most bad government is the result of too > > much government." - Thomas Jefferson > > -- I have failed as much as I have succeeded. But I love my life. I love my wife. And I wish you my kind of success.
