Question

I’m using Feedburner to show feeds. Sometimes the feeds have the same text. I would like to ‘hide’ any ‘duplicates’ of a certain feed. I have wrapped the feedburner script inside a div ‘unique’ like this: jsFiddle

I have set display:none for the feeds because I only want to show the feeds which match the ‘index’. I don’t understand why the var is not ‘showing’

Answer 1

I think the .text() query is incorrect.

var a = $('.unique a').text();

The above returns just text:

Man dood na val in liftschacht RotterdamBulgarije geeft foto vrij van
tweede verdachte bomaanslagStraat ontruimd bij grote brand
OverdinkelAsiel Assange verandert niets voor LondenMoordenaar
honkballer Halman op vrije voetenGrote brand in Overdinkel’Broer
vermoorde honkballer ontoerekeningsvatbaar’Boete voor RET om
studentenreisgegevensDode bij crash vliegtuigje BiddinghuizenMinder
tienermoeders dan ooit in Nederland

There is nothign in a to iterate through.

I think you may be wanting to do:

var a = $('.unique a');

This returns a list of items you can iterate over now.

The next issue I can see is that your filter method simply iterates through the array of 12 items and still return the same 12 items, the item at the index will always match the current item.

Try this solution:

$(document).ready(function() {
    var $a = $('.unique a');
    var unique = {};

    for (i = 0; i < $a.length; i++) {
        var itemText = $($a[i]).text();
        if (unique[itemText]) {
            $($a[i]).remove();
        }
        else {
            unique[itemText] = true;
        }
    };

    $('.unique').show();
});

See DEMO

I declared unique as an object. This object will keep a record of each anchor text value we already processed by adding the itemtext as a property assigning the of true. This is possible due to the dynamic nature of JavaScript which allows you to assign proeprties to an object on the fly.

Boete voor RET om studentenreisgegevens true,
Bulgarije geeft afbeelding vrij van verdachte aanslag true,
Ecuador verleent Wikileaks-baas Julian Assange politiek asiel true

When calling unique[itemText] we are asking the unique object to give us value of the property with the name matching what is in itemText.

If the property exists the value true is returned as that is the value we assign to the property. We will now remove the value from the source as we already processed it.
If the property is not found then undefined is returned and we add the property dynamically to the unique object assigning it the value of true.

With the source now stripped of the duplicates we make the container visible again.