Joost Rekveld

ths probably has to do with my still sketchy knowledge of javascript, 

but i don't understand why within a function this does not work:

index = addToPalette(arguments.slice(2,5));

index = addToPalette(arguments[2], arguments[3], arguments[4]);        

the first line give me the error that arguments.slice is not a 

isn't the arguments property an array (so that I can call the 'slice' 

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"The mystery of the world is the visible, not the invisible"

ths probably has to do with my still sketchy knowledge of javascript, 
but i don't understand why within a function this does not work:

index = addToPalette(arguments[2], arguments[3], arguments[4]);		

the first line give me the error that arguments.slice is not a 
function, which is weird, no ?
isn't the arguments property an array (so that I can call the 'slice' 
method on it ??)

                         Joost Rekveld
-----------    http://www.lumen.nu/rekveld

"The mystery of the world is the visible, not the invisible"
(Oscar Wilde)

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arguments-slice

index = addToPalette([arguments[2], arguments[3], arguments[4]]);

On Apr 20, 2006, at 4:16 PM, Joost Rekveld wrote:

> the first line give me the error that arguments.slice is not a 

> isn't the arguments property an array (so that I can call the 

The arguments object is technically *not* an array, despite being 

indexable as one. Note the wording "array-like" in the Core 

Core_JavaScript_1.5_Guide:Using_the_arguments_object

This is why we've provided the arrayfromargs utility method which 

converts an arguments object to a true array. Basically it does the 

> the first line give me the error that arguments.slice is not a  
> function, which is weird, no ?
> isn't the arguments property an array (so that I can call the  
> 'slice' method on it ??)

The arguments object is technically *not* an array, despite being  
indexable as one. Note the wording "array-like" in the Core  
Javascript 1.5 Guide:

http://developer.mozilla.org/en/docs/ 
Core_JavaScript_1.5_Guide:Using_the_arguments_object

This is why we've provided the arrayfromargs utility method which  
converts an arguments object to a true array. Basically it does the  
following, though from C:

function arrayfromargs(args)
{
	var myarray = new Array();
	var i;

arguments.slice ?