unicode/ascii codes in javascript

[Randell D.]

Folks,

I have two related questions:

1. I have seen unicode being mentioned in my javascript pocket book - is
this the same as ascii codes? I think not though I'm not sure and I
can't find any examples...

2. How do I read/set a string to an unprintable code? For example, how
can I set the variable a to equal the equivalent of ascii code 7 or 8 or
whatever...

Why? I am working on an application which allows the user to enter in
multiple names - I want to store these multiple names in a hidden text
box using a none-printable character as a field seperate for each input
text field value. I know 100% that my keyboard entries will be
ascii/qwerty.

Can someone steer me in the right direction?

randelld

[Randell D.]

Randy Webb wrote:

Randell D. wrote:

Randy Webb wrote:

Randell D. wrote:

<--snip-->

Thus - can you tell me how I can set a variable called fs equal to
ascii character 8? Or even unicode character 8? (It doesn't have to
be 8 - but something not readily available from qwerty keyboard input)


var fs="ß";

Copy and paste as desired. Unless someone you know spells a name with
a B like that. Then, you could use :

var fs="Þ";

or something similar.

It doesn't have to be "non-printable", it only has to be unique.

Yep - I agree that it only has to be unique and I'm grateful for your
suggested solution (which I will use) however I guess there is no
method available in javascript to do what I want to do... true? (Just
for a curiosity/js-educational point of view).

Never really tried but instincts tells me it should be able to, provided
you can get the Unicode character sequence for it.

A while back I wrote a script that I needed a delimiter for much as you
need one and settled on the following:

var myVar = "ßàßÝÞ±º¹²³ ®©";

And unless someone every happened to type that particular sequence then
my app is pretty secure :)

Randy,

I have another post,with subject line 'Re: Odd problem: Data from hidden
field is not sent to server...' that you might be able to help with (if
you don't mind). Without duplicating the entire post, basically, *the
value* my box receives from the result of a javascript function does not
get sent to the server - yet if I manually complete the same field, the
manually entered data does get sent to the server.

I'm wondering if you had any similar problem as you mentioned you've
done something similar to me at some point in the past...

If you can help please reply to my other post as it might well help
others at some pointin the future.

Cheers
randelld

[Martin Honnen]

Randell D. wrote:

2. How do I read/set a string to an unprintable code? For example, how
can I set the variable a to equal the equivalent of ascii code 7 or 8 or
whatever...

There is a method
String.fromChar Code
which takes one ore more numbers as its arguments and creates a string
with as many characters as arguments where the characters are taken from
the numbers interpreted as Unicode code points, thus
var s = String.fromChar Code(65, 66, 67);
makes s have the value 'ABC' or
var s = String.fromChar Code(8364);
the value '€'.

Check <http://www.unicode.org/> for Unicode code charts.

The other way round is
string.charCode At(characterInd ex)
e.g. with var s = String.fromChar Code(8364); the expression
s.charCodeAt(0) yields the number 8364.

--

Martin Honnen
http://JavaScript.FAQTs.com/

[Dr John Stockton]

JRS: In article <Fc************ ********@comcas t.com>, dated Mon, 7 Feb
2005 18:01:06, seen in news:comp.lang. javascript, Randy Webb
<Hi************ @aol.com> posted :

Randell D. wrote:

<--snip-->

Thus - can you tell me how I can set a variable called fs equal to ascii
character 8? Or even unicode character 8? (It doesn't have to be 8 - but
something not readily available from qwerty keyboard input)

Why not with String.fromChar Code() ?

S = String.fromChar Code(0x62b) shows me three peas falling into a wok.

-
comp.lang.java script FAQ - http://jibbering.com/faq

If that's boilerplate, how about adding "& newsgroup weekly"?

--
© 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.

[Randy Webb]

Dr John Stockton wrote:

JRS: In article <Fc************ ********@comcas t.com>, dated Mon, 7 Feb
2005 18:01:06, seen in news:comp.lang. javascript, Randy Webb
<Hi************ @aol.com> posted :

<--snip-->

comp.lang.jav ascript FAQ - http://jibbering.com/faq

If that's boilerplate, how about adding "& newsgroup weekly"?

Semi-boilerplate but close enough that I changed it.
--
Randy
comp.lang.javas cript FAQ - http://jibbering.com/faq & newsgroup weekly