converting number to string

[webmast]

i have something like this. In a page i'll be displaying a set of questions retrieved from the backend all with answers
as radio button choices yes or no. The number of questions generated may vary.so i used the question ID as name for the respective radiobuttons.When i click on submit answers
i want to check whether any question has been left unanswered(no default checked value).if so the alert is shown.In the below function i have first retrieved the count of questions and in a loop trying to check the values of the radio buttons. Since the name of radio buttons are 1,2,3.... like that i 'm using
f.i.value.But i is a number.so i cant use it. How to convert this value of i to string??

function subvalue1(f)
{
var io=f.Count.value;

for(i=1;i<=io;i++)
{
var val=f.i.value;
if(val == &quot;&quot; || val == null){
alert (&quot; Please answer all the Questions&quot;
f.focus();
return false;
}


}

}

 

[JulianUK]

Maybe using Eval function?

var val=eval(&quot;f.&quot; + i + &quot;.value&quot;

or

eval (&quot;val=f.&quot; + i + &quot;.value;&quot

(not sure which is correct)

I've not used it much, but it looks as though its worth a peek at.

Julian

 

[trollacious]

If you use form element names that begin with a number, Javascript will give you all sorts of errors. Always start names for forms, inputs, radio buttons, dropdown lists, and other form elements with a letter or underscore so Javascript will process them correctly.

 

[webmast]

Thanx julian and Trollacious!!!!!!!!

Priya!

 

[xutopia]

For those out there that want to understand what eval does :

This function evaluate a chain of characters as if it was javascript code. Eval is a top level function and is attached to no other objects. It is part of the language itself.

example :

var myString = &quot;alert('John')&quot;
eval(myString) Gary

http://www.xutopia.com

Haran

 

[tsdragon]

Also you cannot use an attribute like .value in an eval. It just doesn't seem to work properly. It especially doesn't work right if you are setting a form field. The better way is to use eval to get an object (i.e. form field) reference, and then use that to access attributes like .value. Like this:

// this gets the value from document.myform.myfield2
var num = 2;
var fldref = eval("document.myform.myfield" + num);
var fldval = fldref.value;
// you can set the value too
fldref.value = "something new";

Tracy Dryden
tracy@bydisn.com

http://www.bydisn.com

Meddle not in the affairs of dragons,
For you are crunchy, and good with mustard.