I have tried your suggestion. I am retrieved data from a <textarea>
form element with these values:
1111
2222
3333
1111
4444
My code that I have been testing using Firefox 3 and Firebug 1.0b4 is:
var txtarea = $F('txtarea4').split(/[\n\r]+/);
var atxtarea = $A(txtarea).sort();
Array.prototype.isUnique = function(value) {
var idx = this.indexOf(value);
return this.indexOf(value, idx + 1 == -1);
};
for (i=0; i<=atxtarea.length; i++) {
alert(atxtarea[i]);
atxtarea.isUnique(atxtarea[i]);
}
The 'alert' shows an 'undefined' value at the end of the loop. I am
receiving a -1 after the loop.
I have tried to setup the test using:
[1111,2222,3333,1111,4444].isUnique(1111) and get a 0 in return
(assume this is the index value of 1111) and not a -1 as I would
expect.
Can you provide me some additional assistance??
On Jun 30, 2:25 pm, kangax <[EMAIL PROTECTED]> wrote:
> It's not complicated at all. Take a look
> athttp://github.com/kangax/protolicious/tree/master/array.extensions.js...
>
> -- kangax
>
> On Jun 30, 8:59 am, few1938 <[EMAIL PROTECTED]> wrote:
>
> > I am trying to detect whenever an array has a duplicate value and then
> > produce an alert to the user that a dupe exists with the value of the
> > dupe.
>
> > Reading 'Prototype & Scriptaculous IN ACTION', I have been able to
> > begin the coding to obtain the textarea values and sort the resultant
> > array. I am having trouble coding the duplicate value detection.
>
> > Here is my limited code:
> > var txtarea = $F('txtarea4').split(/[\n\r]+/);
> > var atxtarea = $A(txtarea).sort();
>
> > I think I should use the .detect or .any methods.
>
> > Frank
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