Need to return string and write generic script

[Ed Jay]

<disclaimer>j s newbie</disclaimer>

My page has a form comprised of several radio buttons. I want to poll the
buttons to determine which button was selected and convert its value to a
string. I then want to use the string on the same page.

My script is:

function checkRadio(fiel d) {
for(var i=0; i < field.length; i++) {
if(field[i].checked) return field[i].value;
}
return false;
}
function checkFormLeft()
{
if(radioValue = checkRadio(form 1.p1_p6_left)) {
if (radioValue == 0) {$syml = 'Uniform Thermal Pattern';}
if (radioValue == 10) {$syml = 'regular thermovascular pattern';}
if (radioValue == 20) {$syml = 'thermovascular network';}
if (radioValue == 25) {$syml = 'irregular thermovascular
pattern';}
if (radioValue == 40) {$syml = 'distorted thermovascular
pattern';}
if (radioValue == 60) {$syml = 'anarchic thermovascular pattern';}
alert("You selected " + $syml);
}
}

I call the script using onClick="checkF orm()"

I added the alerts so I could verify the script is working. It is, but
when I try to use either $syml on the page calling the script, I get
nothing, e.g., 'The veins are $syml.' gives me 'The veins are.'

How do I use the string?

Question 2:

I have several pages with multiple radio (and checkbox) arrays. I'd like
to use a single js script for all of them. The 'p1_p6_left' in the above
is the common name of the radio button array. How do I write
'checkRadio(for m1.p1_p6_left)' so I can pass different values in place of
p1_p6_left?

TIA (again)

--
Ed Jay (remove M to respond by email)

[Evertjan.]

Ed Jay wrote on 05 dec 2005 in comp.lang.javas cript:

<disclaimer>j s newbie</disclaimer>
[..]
if (radioValue == 60) {$syml = 'anarchic thermovascular pattern';}

"$syml" what langiage is that?
Not clientside Javascript surely?

Could it be,
that you try to set a serverside [php?] variable on the client?

If so, remember that the server is another machine.

--
Evertjan.
The Netherlands.
(Replace all crosses with dots in my emailaddress)

[web.dev]

Ed Jay wrote:

<disclaimer>j s newbie</disclaimer>

My page has a form comprised of several radio buttons. I want to poll the
buttons to determine which button was selected and convert its value to a
string. I then want to use the string on the same page.

My script is:

function checkRadio(fiel d) {
for(var i=0; i < field.length; i++) {
if(field[i].checked) return field[i].value;
}
return false;
}
function checkFormLeft()
{
if(radioValue = checkRadio(form 1.p1_p6_left)) {
if (radioValue == 0) {$syml = 'Uniform Thermal Pattern';}
if (radioValue == 10) {$syml = 'regular thermovascular pattern';}
if (radioValue == 20) {$syml = 'thermovascular network';}
if (radioValue == 25) {$syml = 'irregular thermovascular
pattern';}
if (radioValue == 40) {$syml = 'distorted thermovascular
pattern';}
if (radioValue == 60) {$syml = 'anarchic thermovascular pattern';}
alert("You selected " + $syml);
}
}

Values are always a string, but you're checking against a number.
Also, it would look better if you used a switch statement instead when
you're doing a lot of "ifs". For example:

switch(radioVal ue)
{
case "0":
$syml = "Uniform Thermal Pattern";
break;
case "10":
$syml = "thermovasc ular network";
break;
...[add more cases]...
default:
$syml = "none of the above";
break;
}

[web.dev]

Evertjan. wrote:

"$syml" what langiage is that?
Not clientside Javascript surely?

Yes, javascript does allow the use of '$' as an identifier. But as you
said, it can potentially become confusing to differentiate between
javascript and php.

[Ed Jay]

"Evertjan." <ex************ **@interxnl.net > wrote:

Ed Jay wrote on 05 dec 2005 in comp.lang.javas cript:

<disclaimer>j s newbie</disclaimer>
[..]

if (radioValue == 60) {$syml = 'anarchic thermovascular pattern';}

"$syml" what langiage is that?
Not clientside Javascript surely?

It's only a label that I assigned.
Could it be,
that you try to set a serverside [php?] variable on the client?
No.
If so, remember that the server is another machine.

Yes, I know. Thanks.

--
Ed Jay (remove M to respond by email)

[Ed Jay]

"web.dev" <we********@gma il.com> wrote:

Ed Jay wrote:

<disclaimer>j s newbie</disclaimer>

My page has a form comprised of several radio buttons. I want to poll the
buttons to determine which button was selected and convert its value to a
string. I then want to use the string on the same page.

My script is:

function checkRadio(fiel d) {
for(var i=0; i < field.length; i++) {
if(field[i].checked) return field[i].value;
}
return false;
}
function checkFormLeft()
{
if(radioValue = checkRadio(form 1.p1_p6_left)) {
if (radioValue == 0) {$syml = 'Uniform Thermal Pattern';}
if (radioValue == 10) {$syml = 'regular thermovascular pattern';}
if (radioValue == 20) {$syml = 'thermovascular network';}
if (radioValue == 25) {$syml = 'irregular thermovascular
pattern';}
if (radioValue == 40) {$syml = 'distorted thermovascular
pattern';}
if (radioValue == 60) {$syml = 'anarchic thermovascular pattern';}
alert("You selected " + $syml);
}
}
Values are always a string, but you're checking against a number.

I'm checking a number so I can assign the appropriate string. I don't get
your point.
Also, it would look better if you used a switch statement instead when
you're doing a lot of "ifs". For example:

switch(radioVa lue)
{
case "0":
$syml = "Uniform Thermal Pattern";
break;
case "10":
$syml = "thermovasc ular network";
break;
...[add more cases]...
default:
$syml = "none of the above";
break;
}

Thanks for the tip, but I still need my two questions answered.

--
Ed Jay (remove M to respond by email)

[Evertjan.]

web.dev wrote on 05 dec 2005 in comp.lang.javas cript:
[..]

Values are always a string, but you're checking against a number.
Also, it would look better if you used a switch statement instead when
you're doing a lot of "ifs". For example:

switch(radioVal ue)
{
case "0":

Or use an array:

<script type='text/javascript'>

var s= [
'Uniform Thermal Pattern',
'regular thermovascular pattern',
'thermovascular network',
'irregular thermovascular pattern',
'distorted thermovascular pattern',
'anarchic thermovascular pattern'
]

function checkRadio(fiel d) {
for(var i=0; i < field.length; i++)
if(field[i].checked)
alert('You selected:\n' + s[i]);
return false;
}

</script>

<form onsubmit='retur n checkRadio(this .r1)'>
<input type='radio' name='r1'>0
<input type='radio' name='r1'>10
<input type='radio' name='r1'>20
<input type='radio' name='r1'>25
<input type='radio' name='r1'>40
<input type='radio' name='r1'>60
<input type='submit'>
</form>
--
Evertjan.
The Netherlands.
(Replace all crosses with dots in my emailaddress)

[web.dev]

Ed Jay wrote:

"web.dev" <we********@gma il.com> wrote:

Values are always a string, but you're checking against a number.

I'm checking a number so I can assign the appropriate string. I don't get
your point.

Following your style of programming, if I were to do what you were
doing, it would instead be this:

if(radioValue == "0")
....
else if(radio Value == "10")
....

The values you you get from the fields are *strings* not a number.
Therefore, checking against a number will not work. You need to check
against another string value.

[Ed Jay]

"web.dev" <we********@gma il.com> wrote:

Ed Jay wrote:

"web.dev" <we********@gma il.com> wrote:

>Values are always a string, but you're checking against a number.

I'm checking a number so I can assign the appropriate string. I don't get
your point.

Following your style of programming, if I were to do what you were
doing, it would instead be this:

if(radioValu e == "0")
...
else if(radio Value == "10")

Why use 'else' if it's not needed?...

The values you you get from the fields are *strings* not a number.
Therefore, checking against a number will not work. You need to check
against another string value.

I understand what you're saying, but it seems to be working, except as
noted in my original questions.

My buttons have numerical values, i.e., 'value = 10' not 'value = "10",'
so aren't they numbers I'm checking against?

As I say, except for my original questions, when I click a button, the
alert window comes up with the correct string ($syml).

--
Ed Jay (remove M to respond by email)

[Ed Jay]

Lee <RE************ **@cox.net> wrote:

Ed Jay said:

<disclaimer>j s newbie</disclaimer>

My page has a form comprised of several radio buttons. I want to poll the
buttons to determine which button was selected and convert its value to a
string. I then want to use the string on the same page.

My script is:

function checkRadio(fiel d) {
for(var i=0; i < field.length; i++) {
if(field[i].checked) return field[i].value;
}
return false;
}
function checkFormLeft()
{
if(radioValue = checkRadio(form 1.p1_p6_left)) {
if (radioValue == 0) {$syml = 'Uniform Thermal Pattern';}
if (radioValue == 10) {$syml = 'regular thermovascular pattern';}
if (radioValue == 20) {$syml = 'thermovascular network';}
if (radioValue == 25) {$syml = 'irregular thermovascular
pattern';}
if (radioValue == 40) {$syml = 'distorted thermovascular
pattern';}
if (radioValue == 60) {$syml = 'anarchic thermovascular pattern';}
alert("You selected " + $syml);
}
}

I call the script using onClick="checkF orm()"
Obviously that's not really how you're calling checkFormLeft() .

:-) You're correct...I call it as checkFormLeft() .
Are you calling checkFormLeft() from within a function that
contains "var $syml"?
No. I'm simply calling it with an onClick event from within a form input
element, e.g., <input name=xyz value=25 onClick="checkF ormLeft();">
If so, you've declared the variable to
be local to that function, so you can't set its value in another.
If all checkFormLeft() does is set the value of that variable,
have it return that value, rather than assign to a global.

I don't understand. One of my questions was 'how do I return the variable
so I can use it on the calling page?'

--
Ed Jay (remove M to respond by email)