I want to check each button groups and save the checked value into a 2
dimensional array. But, it doesn't work. Could anyone tell me what's
wrong with my code. My code is as follow:
<html>
<body>
<script language="javas cript">
<!--
var temp = new Array(2)
var status = new Array();
function getRadios( paramform )
{
for( var iElement=0; iElement<paramf orm.elements.le ngth; iElement++ )
{
if( paramform.eleme nts[iElement].checked )
{
temp[0] = paramform.eleme nts[iElement].name;
temp[1] = paramform.eleme nts[iElement].value;
status[status.length] = temp;
}
}
}
<form name="training" >
<table>
<tr>
<td>Microsoft Outlook: </td>
<td>
<input type='radio' name="outlook" value="START"
onClick="getRad ios(document.tr aining)"> START
<input type='radio' name="outlook" value="COMPLETE D"
onClick="getRad ios(document.tr aining)"> COMPLETED
<input type='radio' name="outlook" value="IN PROGRESS"
onClick="getRad ios(document.tr aining)"> INPROGRESS
</td>
</tr>
<tr>
<td>Microsoft Word: </td>
<td>
<input type='radio' name="word" value="START"
onClick="getRad ios(document.tr aining)"> START
<input type='radio' name="word" value="COMPLETE D"
onClick="getRad ios(document.tr aining)"> COMPLETED
<input type='radio' name="word" value="IN PROGRESS"
onClick="getRad ios(document.tr aining)"> INPROGRESS
</td>
</tr>
</table>
</form>
</body>
</html> 15  2111 
tabonni wrote: I want to check each button groups and save the checked value into a 2
dimensional array. But, it doesn't work.
"Does not work" is a useless error description. [psf 4.11]
Could anyone tell me what's wrong with my code.
Could you tell us what you expected and what you observed?
My code is as follow:
<html>
<body>
<script language="javas cript">
<http://validator.w3.or g/>
<!--
Remove this, it is obsolete.
var temp = new Array(2)
In ECMAScript/J(ava)Script, arrays are dynamic by nature. Dimensioning
the array on initialization is not only unnecessary, but also error-prone.
Particularly a number as sole constructor argument may cause an array with
two undefined elements to be created in one implementation, and an array
with one element of type "number" with value 2 in another.
var status = new Array();
function getRadios( paramform )
{
for( var iElement=0; iElement<paramf orm.elements.le ngth; iElement++ )
{
if( paramform.eleme nts[iElement].checked )
{
temp[0] = paramform.eleme nts[iElement].name;
temp[1] = paramform.eleme nts[iElement].value;
status[status.length] = temp;
}
}
}
You look up references far too often which makes the script run slow.
Consider this:
function getRadios(f)
{
if (f && (e = f.elements))
{
for (var iElement = 0, len = e.length; iElement < len; i++)
{
var o = e[iElement];
if (o.checked)
{
status[status.length] = [o.name, o.value];
}
}
}
}
And, as you see, do not use tab chracters for indentation,
especially not when posting code.
<form name="training" >
<table>
<tr>
<td>Microsoft Outlook: </td>
Do not use tables for layout purposes alone.
<td>
<input type='radio' name="outlook" value="START"
onClick="getRad ios(document.tr aining)"> START
[...]>
</form>
No need for proprietary referencing like `document.train ing'
and no need for defining the listener for every element. Use
event bubbling instead:
function getRadios(e)
{
var t = (e && e.target) || event.srcElemen t;
if (t.tagName && t.tagName.toLow erCase() == "input"
&& t.type && t.type.toLowerC ase() == "radio")
{
if (t.checked)
{
status[status.length] = [t.name, t.value];
}
}
}
<form ... onclick="getRad ios(event)">
...
</form>
But the problem with your code and even with my code is that you always
add elements to the array, even if the required data is already added.
This looks like a problem suited more for Object objects instead of Array
objects, but why do you think you need to store the values in an array
although already stored in DOM objects in the first place?
PointedEars
tabonni wrote: I want to check each button groups and save the checked value into a 2
dimensional array. But, it doesn't work. Could anyone tell me what's
wrong with my code. My code is as follow:
<html>
<body>
<script language="javas cript">
<!--
var temp = new Array(2)
var status = new Array();
function getRadios( paramform )
{
for( var iElement=0; iElement<paramf orm.elements.le ngth; iElement++ )
{
if( paramform.eleme nts[iElement].checked )
{
temp[0] = paramform.eleme nts[iElement].name;
temp[1] = paramform.eleme nts[iElement].value;
status[status.length] = temp;
}
}
}
Along with Thomas' observations, why not terminate the loop when you
find an element checked?
Mick
My purpose on storing each radio name and value into an array is for
me to set the cookie easier (I think).
My idea is:
I got a form with different radio button groups. After the user check
the radio values, I will store names and values into a 2D array. For
example: the user check "outlook, start" and "word, completed", I will
put it into status[0][0]=outlook, status[0][1]=start,...
Then, I can put them into cookie like: Use a for..loop and setCookie(
status[name], status[value]); And later on, I can get the data in the
cookie and display on the form again.
Cheers
Bonnie
Mick White <mw******@BOGUS rochester.rr.co m> wrote in message news:<c_******* *************@t wister.nyroc.rr .com>... tabonni wrote:
I want to check each button groups and save the checked value into a 2
dimensional array. But, it doesn't work. Could anyone tell me what's
wrong with my code. My code is as follow:
<html>
<body>
<script language="javas cript">
<!--
var temp = new Array(2)
var status = new Array();
function getRadios( paramform )
{
for( var iElement=0; iElement<paramf orm.elements.le ngth; iElement++ )
{
if( paramform.eleme nts[iElement].checked )
{
temp[0] = paramform.eleme nts[iElement].name;
temp[1] = paramform.eleme nts[iElement].value;
status[status.length] = temp;
}
}
}
Along with Thomas' observations, why not terminate the loop when you
find an element checked?
Mick
Thomas 'PointedEars' Lahn <Po*********@nu rfuerspam.de> wrote in message news:<41******* *****@PointedEa rs.de>... tabonni wrote: I want to check each button groups and save the checked value into a 2
dimensional array. But, it doesn't work.
"Does not work" is a useless error description. [psf 4.11]
Could anyone tell me what's wrong with my code.
Could you tell us what you expected and what you observed?
My code is as follow:
<html>
<body>
<script language="javas cript">
<http://validator.w3.or g/>
<!--
Remove this, it is obsolete.
var temp = new Array(2)
In ECMAScript/J(ava)Script, arrays are dynamic by nature. Dimensioning
the array on initialization is not only unnecessary, but also error-prone.
Particularly a number as sole constructor argument may cause an array with
two undefined elements to be created in one implementation, and an array
with one element of type "number" with value 2 in another.
var status = new Array();
function getRadios( paramform )
{
for( var iElement=0; iElement<paramf orm.elements.le ngth; iElement++ )
{
if( paramform.eleme nts[iElement].checked )
{
temp[0] = paramform.eleme nts[iElement].name;
temp[1] = paramform.eleme nts[iElement].value;
status[status.length] = temp;
}
}
}
You look up references far too often which makes the script run slow.
Consider this:
function getRadios(f)
{
if (f && (e = f.elements))
{
for (var iElement = 0, len = e.length; iElement < len; i++)
{
var o = e[iElement];
if (o.checked)
{
status[status.length] = [o.name, o.value];
}
}
}
}
And, as you see, do not use tab chracters for indentation,
especially not when posting code.
<form name="training" >
<table>
<tr>
<td>Microsoft Outlook: </td>
Do not use tables for layout purposes alone.
<td>
<input type='radio' name="outlook" value="START"
onClick="getRad ios(document.tr aining)"> START
[...]>
</form>
No need for proprietary referencing like `document.train ing'
and no need for defining the listener for every element. Use
event bubbling instead:
function getRadios(e)
{
var t = (e && e.target) || event.srcElemen t;
if (t.tagName && t.tagName.toLow erCase() == "input"
&& t.type && t.type.toLowerC ase() == "radio")
{
if (t.checked)
{
status[status.length] = [t.name, t.value];
}
}
}
<form ... onclick="getRad ios(event)">
...
</form>
But the problem with your code and even with my code is that you always
add elements to the array, even if the required data is already added.
This looks like a problem suited more for Object objects instead of Array
objects, but why do you think you need to store the values in an array
although already stored in DOM objects in the first place?
PointedEars
maybe it could be solved by using hashes(associat ive arrays), instead of
status[status.length] = [t.name, t.value];
one could do
status[name]=value;
so that status always keeps selected values from each name group, no duplicates..
On 3 Aug 2004 17:14:19 -0700, tabonni <ta*****@yahoo. com> wrote: My purpose on storing each radio name and value into an array is for
me to set the cookie easier (I think).
My idea is:
I got a form with different radio button groups. After the user check
the radio values, I will store names and values into a 2D array. For
example: the user check "outlook, start" and "word, completed", I will
put it into status[0][0]=outlook, status[0][1]=start,...
Then, I can put them into cookie like: Use a for..loop and setCookie(
status[name], status[value]); And later on, I can get the data in the
cookie and display on the form again.
[snip]
In that case, it might be better to change that 2D array to a single
dimensioned array and use an object to hold the name/value pairs:
function Pair(n, v) {
this.name = n;
this.value = v;
}
status[0] = new Pair('outlook', 'start');
status[1] = new Pair('word', 'completed');
// ...
for(var i = 0, n = status.length; i < n; ++i) {
setCookie(statu s[i].name, status[i].value);
}
Much cleaner and easier to understand.
Mike
--
Michael Winter
Replace ".invalid" with ".uk" to reply by e-mail
Michael Winter wrote:
<snip> status[0] = new Pair('outlook', 'start');
<snip>
As an observation in passing, the global variable identifier - status -
corresponds with the - status - property of the window object. As -
window.status - is one of those properties with an overloaded setter
assigning an Array to the property might just have the Array
type-converted to a string and the result displayed in the window's
status bar. And attempts to read the property might be returning a
string primitive, subsequently type-converted to a String object when
used with bracket notation property accessors, allowing assignment to
properties of that (transient) String object, and reading (undefined)
values from it, without error but to no effect.
It might be that the global - var - declaration would avoid the problem
in some browsers, but not according to ECMA 262, where section 10.1.3
reads "If there is already a property of the Variable object with the
name of a declared variable, the value of the property and its
attributes are not changed.", in the context of variable instantiation.
(The global object is used as the "Variable" object in global execution
contexts.)
Richard.
On Wed, 4 Aug 2004 14:11:59 +0100, Richard Cornford
<Ri*****@litote s.demon.co.uk> wrote: Michael Winter wrote:
<snip> status[0] = new Pair('outlook', 'start');
<snip>
As an observation in passing, the global variable identifier - status -
corresponds with the - status - property of the window object. As -
window.status - is one of those properties with an overloaded setter
assigning an Array to the property might just have the Array
type-converted to a string and the result displayed in the window's
status bar. And attempts to read the property might be returning a
string primitive, subsequently type-converted to a String object when
used with bracket notation property accessors, allowing assignment to
properties of that (transient) String object, and reading (undefined)
values from it, without error but to no effect.
It might be that the global - var - declaration would avoid the problem
in some browsers, but not according to ECMA 262, where section 10.1.3
reads "If there is already a property of the Variable object with the
name of a declared variable, the value of the property and its
attributes are not changed.", in the context of variable instantiation.
(The global object is used as the "Variable" object in global execution
contexts.)
So in other (shorter) words, use a name such as 'state' to avoid any
conflict. :)
Yet another thing I've overlooked today.
Thanks,
Mike
--
Michael Winter
Replace ".invalid" with ".uk" to reply by e-mail
Michael Winter wrote:
<snip> So in other (shorter) words, use a name such as 'state'
to avoid any conflict. :)
<snip>
Yes, or keep the variable out of the global scope.
Richard.
ivanhoe wrote: Thomas 'PointedEars' Lahn <Po*********@nu rfuerspam.de> wrote [...]: But the problem with your code and even with my code is that you always
add elements to the array, even if the required data is already added.
This looks like a problem suited more for Object objects instead of Array
objects [...]
maybe it could be solved by using hashes(associat ive arrays), instead of
status[status.length] = [t.name, t.value];
one could do
status[name]=value;
so that status always keeps selected values from each name group, no duplicates..
You are talking about Object/user-defined objects which I already mentioned
(yet using `status' as identifier is error-prone, there is a property of the
`window'/global object of that name in browsers). ECMAScript/J(ava)Script
has no built-in concept of associative arrays (as e.g. in PHP) or hashes (Perl).
And please, <http://netmeister.org/news/learn2quote.htm l>.
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