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<div class="imgs">
<img src="" data-id="1"/><img src="" data-id="2"/>........
</div>
<script>
function showIdsData(){
var imgs=$(".imgs img");
var ids=new Array();
for(var i=0;i<imgs.length;i++){
ids.push(imgs[i].attr("data-id");
}
console.log(ids);
}
showIdsData();
</script>
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