Javascript variables evaluating as undefined, but they should have values.

[Sebarry]

Hi,

 

var primaryKeyToKeyValue = new Array();
	
for(var i = 0; i < arguments.length; i++)
{
     var len = document.getElementsByName(arguments[i])[0].options.length;
		
     for( var j = 0; j < len; j++ )
     {
           if( document.getElementsByName(arguments[i])[0].options[j].selected )
           {
	if( document.getElementsByName(arguments[i])[0].options[j].value !
                    = "-----" )
	{
	      primaryKeyToKeyValue[arguments[i]] = 
                          document.getElementsByName
                              (arguments[i])[0].options[j].value;

                       alert( "Key is: " + primaryKeyToKeyValue[arguments[i]] );
	}
             }
       }
 }
	
alert( "Array is: " + primaryKeyToKeyValue );

The value printed out for

key

is

1

although if I print out

arguments[i]

the value printed out is the value of

arguments[i]

.

The value printed out for

Array

is

undefined

. What are the scoping rules for Javascript. It doesn't seem that changes to

primaryKeyToKeyValue

during the for loops are not reflected at the end of the loop.

Please help.

Sean.

[gits]

hi ...

you posted in the js-articles section ... i moved it over to the forum for you.

kind regards

[si4]

Hi,

Here is nice article about variable scope in Javascript:

http://www.thescripts.com/forum/thread655478.html

Check your IFs statements, because if they are not TRUE neither of all loops you will not set the array any value.

( Sorry for the bad English )

[pbmods]

Changed thread title to better describe the problem (did you know that threads whose titles that do not follow the Posting Guidelines actually get FEWER responses?).