variables not set

[Bert]

There seems to be problem with the following javascript code but I can't see
it.
tmpd = "September 14, 2007";
n = 0;
tf = false;
do {
n++;
tf = !(tf);
}
while (sdte[n]<>tmpd);
This script is in the header. The script includes two large arrays (200
elements).
The variables n, tf, and tmpd are used in javascript code in the body.
(Each is defined with a var statement at the beginning of the header script
script. If I comment out the do...while loop and insert "n=13;" (for
example), the code in the body works fine. I want tf to switch from true to
false with each pass through the loop. The looping will stop when tmpd
equals a date (in string form) in the sdte array.

[Martin Honnen]

Bert wrote:

while (sdte[n]<>tmpd);

<should give a syntax error in JavaScript. I think you are looking
for !=
--

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

[Thomas 'PointedEars' Lahn]

Bert wrote:

tmpd = "September 14, 2007";
n = 0;
tf = false;
do {
n++;
tf = !(tf);
}

You should use meaningful identifiers:

var sDate = "September 14, 2007";

while (sdte[n]<>tmpd);

As Martin wrote.

[...] I want tf to switch from true to false with each pass through the
loop.

You may omit the parantheses there, then.

Other ways for an alternating value would be

tf = -tf;

and

tf = n % 2;

Either one might be better suited to your yet unknown purpose.

The looping will stop when tmpd equals a date (in string form)
in the sdte array.

It would be less error-prone if you compared two Date objects.

It is not clear why you are doing this, but your approach
looks to me as if it there was a better one.
PointedEars
--
"Use any version of Microsoft Frontpage to create your site. (This won't
prevent people from viewing your source, but no one will want to steal it.)"
-- from <http://www.vortex-webdesign.com/help/hidesource.htm>

[Randy Webb]

Thomas 'PointedEars' Lahn said the following on 9/9/2007 10:01 AM:

Bert wrote:

>tmpd = "September 14, 2007";
n = 0;
tf = false;
do {
n++;
tf = !(tf);
}

You should use meaningful identifiers:

var sDate = "September 14, 2007";

Whether an identifier is "meaningful" or not is up to the person writing
the code and the identifier tmpd may not be meaningful to you but that
doesn't mean it isn't meaningful to the OP.

You didn't mention the lack of "var" though.

--
Randy
Chance Favors The Prepared Mind
comp.lang.javascript FAQ - http://jibbering.com/faq/index.html
Javascript Best Practices - http://www.JavascriptToolbox.com/bestpractices/

[Thomas 'PointedEars' Lahn]

Randy Webb wrote:

You didn't mention the lack of "var" though.

You didn't read the OP thoroughly enough.
PointedEars
--
Prototype.js was written by people who don't know javascript for people
who don't know javascript. People who don't know javascript are not
the best source of advice on designing systems that use javascript.
-- Richard Cornford, cljs, <f8*******************@news.demon.co.uk>

[Bert]

Thanks, this was what I needed!
Bert

"Martin Honnen" <ma*******@yahoo.dewrote in message
news:46**********************@newsspool2.arcor-online.net...

Bert wrote:

>while (sdte[n]<>tmpd);

<should give a syntax error in JavaScript. I think you are looking for
!=
--

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

[Douglas Crockford]

Bert wrote:

There seems to be problem with the following javascript code but I can't see
it.
tmpd = "September 14, 2007";
n = 0;
tf = false;
do {
n++;
tf = !(tf);
}
while (sdte[n]<>tmpd);

JSLint is very good at spotting errors like this.

http://www.JSLint.com/