javascript - jquery. get custom attribute array without duplication -


i have following selector:

$('.photo-box[data="images100"] .photo div')

it return array of values:

[<div class=​"close-image" imageid=​"11" terminalid=​"100">​</div>​,   <div class=​"close-image" imageid=​"10" terminalid=​"100">​</div>​,   <div class=​"close-image" imageid=​"12" terminalid=​"100">​</div>​,   <div class=​"close-image" imageid=​"11" terminalid=​"100">​</div>​,   <div class=​"close-image" imageid=​"10" terminalid=​"100">​</div>​,   <div class=​"close-image" imageid=​"12" terminalid=​"100">​</div>​]

i want array different imageid values without duplication.

how can make ?

p.s.

in case should 

["10", "11", "12"] 

var image_ids = []; $('.photo-box[data="images100"] .photo div').each(function() {     var image_id = $(this).attr('imageid');     if (image_ids.indexof(image_id) == -1) {         image_ids.push(image_id);     } });

the above create array of image id's, loop through image divs, check if image id in array, , if not, add array.


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