Suppose you got a really long page and you'd like to enable
the user (supposedly, there's only one but if it's not to
difficult we could extend that to any number) not to have
to scroll to the last position in the document he/she was
viewing but simply auto-jump him/her to it. Is that doable
at all using JS?
I guess it would be somewhere in the vicinity of:
- remember every scroll
- save the line number to the users HDD
- at next visit jump to the saved line
I have seen pages that "remember" me by cookies so i
guess that's a good start for the solution but the rest of
the issue i'd love to get some help with.
I've worked with Java and C++ for a few years so the
prorgamming issues are not a problem. However, i'm
still rather new to JS.
--
Vänligen
Konrad
---------------------------------------------------
Sleep - thing used by ineffective people
as a substitute for coffee
Ambition - a poor excuse for not having
enough sense to be lazy
---------------------------------------------------
Jul 23 '05
16  1620 
> <quote> Suppose you got a really long page and you'd like to enable
the user (supposedly, there's only one but if it's not to
difficult we could extend that to any number)...
</quote>
I took that to mean a certain degree of assurance of who those users
might be - and under what conditions this 'solution' might be
applied. In a general sense, you're quite right, HTML is not dtp
and any fix which relies on window configuration is not reliable.
Correct assumption! The "user" will most likely be me and
maybe (only maybe) a handfull of friends, none of which
is known to or expected to make any changes to the font
size, window position/size etc.
So, for all you know (and please go with that) you got my
drift exactly! Nevertheless, it's nice to know that there
are certain limitations to what can be achieved.
--
Vänligen
Konrad
---------------------------------------------------
Sleep - thing used by ineffective people
as a substitute for coffee
Ambition - a poor excuse for not having
enough sense to be lazy
---------------------------------------------------
Konrad Viltersten wrote: <quote>
Suppose you got a really long page and you'd like to enable
the user (supposedly, there's only one but if it's not to
difficult we could extend that to any number)...
</quote>
I took that to mean a certain degree of assurance of who those
users might be - and under what conditions this 'solution' might be
applied. In a general sense, you're quite right, HTML is not dtp
and any fix which relies on window configuration is not reliable.
Correct assumption! The "user" will most likely be me and
maybe (only maybe) a handfull of friends, none of which
is known to or expected to make any changes to the font
size, window position/size etc.
So, for all you know (and please go with that) you got my
drift exactly! Nevertheless, it's nice to know that there
are certain limitations to what can be achieved.
--
Vänligen
Konrad
---------------------------------------------------
Sleep - thing used by ineffective people
as a substitute for coffee
Ambition - a poor excuse for not having
enough sense to be lazy
---------------------------------------------------
Hey Konrad...the above works for me locally. If you can't get
window.onunload to run something is amiss. Might you be assigning it
somewhere else ? (it's the same as same as <body onunload=".."> btw)
Think about this while enjoying your girlfriend.
> Hey Konrad...the above works for me locally. If you can't get window.onunload to run something is amiss. Might you be
assigning it somewhere else ? (it's the same as same as <body
onunload=".."> btw)
Well, it's really strange, since i get an event when loading...
Anyway, i have set up the minimal code that reproduces the
behavior. Does it work locally on you computer?
<html><head><sc ript type="text/javascript">
window.onload = function() {
alert ('The page has loaded successfully!') ;}
window.onunload = function() {
alert ('The page has started unloading!');}
</script></head>
<body><pre><scr ipt type="text/javascript">
var z = 0;
while (z++ < 200)
document.writel n(z);
</script></pre>
</body></html>
On my system only loading produces an alert...
Is that too browser depending? I have IE6.0
with SP2, as far as i can see.
--
Vänligen
Konrad
---------------------------------------------------
Sleep - thing used by ineffective people
as a substitute for coffee
Ambition - a poor excuse for not having
enough sense to be lazy
---------------------------------------------------
Konrad Viltersten wrote: Hey Konrad...the above works for me locally. If you can't get
window.onunload to run something is amiss. Might you be
assigning it somewhere else ? (it's the same as same as <body
onunload=".."> btw)
Well, it's really strange, since i get an event when loading...
Anyway, i have set up the minimal code that reproduces the
behavior. Does it work locally on you computer?
<html><head><sc ript type="text/javascript">
window.onload = function() {
alert ('The page has loaded successfully!') ;}
window.onunload = function() {
alert ('The page has started unloading!');}
</script></head>
<body><pre><scr ipt type="text/javascript">
var z = 0;
while (z++ < 200)
document.writel n(z);
</script></pre>
</body></html>
On my system only loading produces an alert...
Is that too browser depending? I have IE6.0
with SP2, as far as i can see.
--
Vänligen
Konrad
---------------------------------------------------
Sleep - thing used by ineffective people
as a substitute for coffee
Ambition - a poor excuse for not having
enough sense to be lazy
---------------------------------------------------
This has been discussed here previously:
<URL:
http://groups-beta.google.com/group/...8a26e4f3adf256
Try window.onbefore unload...
>> Well, it's really strange, since i get an event when loading... Anyway, i have set up the minimal code that reproduces the
behavior. Does it work locally on you computer?
window.onunload = function() {
alert ('The page has started unloading!');}
This has been discussed here previously:
http://groups-beta.google.com/group/...8a26e4f3adf256 Try window.onbefore unload...
Aha, there we go! Got it. It still doesn't work as the
computer doesn't scroll to the last position but from
here i think i'd like to fight it on my own for a while.
I'll make sure to get back bitching and whining if i
fail to do so, hehe.
Thanks!
--
Vänligen
Konrad
---------------------------------------------------
Sleep - thing used by ineffective people
as a substitute for coffee
Ambition - a poor excuse for not having
enough sense to be lazy
---------------------------------------------------
JRS: In article <11************ *********@g47g2 000cwa.googlegr oups.com>,
dated Fri, 13 May 2005 09:31:46, seen in news:comp.lang. javascript, RobB
<fe******@hotma il.com> posted :
var now = new Date();
now.setTime(now .getTime() + 365 * 24 * 60 * 60 * 1000);
var now = new Date();
now.setMonth(no w.getMonth() + 12);
is simpler, while avoiding the question of whether getFullYear and
setFullYear are supported.
var now = new Date(+new Date()+32e9);
gives a little over a year, and should be fast if the browser is smart
about object lifetimes.
--
© John Stockton, Surrey, UK. ?@merlyn.demon. co.uk Turnpike v4.00 IE 4 ©
<URL:http://www.jibbering.c om/faq/> JL/RC: FAQ of news:comp.lang. javascript
<URL:http://www.merlyn.demo n.co.uk/js-index.htm> jscr maths, dates, sources.
<URL:http://www.merlyn.demo n.co.uk/> TP/BP/Delphi/jscr/&c, FAQ items, links.
Richard Cornford wrote: RobB wrote: Konrad Viltersten wrote: askMe wrote:
You could use anchors.
Do you mean <snip> (snip)
(snip)
Fred's solution was correct.
The problem with Fred's suggestion is that the degree to which a page
has previously been scrolled by a user will depend in part of the
layout and flow of the document.
Let alone if the user returns to the page from a different computer.
If his cookies just returned the user to an anchor, he won't need to
bother with screen dimensions, coordinates, scroll positions, type of
browser... and the list goes on.
So re-visiting the site with a browser window
of different dimensions will tend to invalidate the scroll offsets
from previous visits.
Exactly!
And if the user has changed their default (or current)
font size between visits then previous scroll offsets will also no
longer be valid.
Another good point.
It may be that the real solution to this problem is the provision of
internal navigation on a page, so that the use can quickly get back
to where they remember being.
Yes. Anchors and a click here to return link/button gets my vote,
especially since its for a small audience.
(snip)
Richard.
There are also lots of form scripts that return the user to the last
position, but they also rely on the user clicking a button to mark the
spot. He only needs to use hidden fields, getElementByID and focus to
go that route. Otherwise, he can just have the preset anchors that get
'saved' when the use is tired of reading and wants to mark a section or
paragraph to return to on next visit.
Browsers know what the coordinates are and use that data to return a
user to the same screen position when the back button is pressed. But,
as you pointed out, that deals only with the current window within the
current browser. Anchors don't care about the window or the browser
and neither do forms.
I would love to see a javascript that relates scroll position to
page/character position without user intervention. Never seen one.
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