You changed the method, so it doesn't work. The last line should be:
this.indexOf(value, idx + 1) == -1;
...
[1,2,3,1,2].isUnique(1); // false
[1,2,3,1,2].isUnique(3); // true
-- kangax
On Jul 1, 8:45 am, few1938 <[EMAIL PROTECTED]> wrote:
> 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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