Not only that, but if the array contains objects, the toString()
method on the Object prototype will cause all but one object to be
removed from the array, because all objects without an overridden
toString() method report "[object]".
On Aug 30, 2007, at 5:50 PM, Tom Gregory wrote:
> On Aug 30, 2007, at 5:52 PM, Mislav Marohnić wrote:
>
>> On 8/31/07, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
>>
>> also, for generating unique arrays:
>>
>> function uniqueArray( array ){
>> var uniqueHash = {}, unique=[], i;
>> for( i=array.length; i--; ){
>> if( !uniqueHash[ a[i] ]){
>> unique.push( array[i] );
>> uniqueHash[ a[i] ] = true;
>> }
>> }
>> return unique;
>> }
>
> Although I expect this to be faster (linear time), this produces
> incorrect results for certain arrays due to the implicit toString
> (). Arrays of DOM elements might not be properly uniq-ed, for
> example. The same is true for the following array (which uniq()
> handles properly):
>
> var a = [true, "true"];
>
> console.log( a.uniq() );
> // [true, "true"]
>
> console.log( uniqueArray(a) );
> // [true]
>
>
>
> TAG
>
> >
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