each function in javascript for new elements -

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i have page infinite scroll appends new elements user scrolls down. ".product-variation" 1 such element. want remove first option of newly arriving elements. code below job think goes , down dom bit - retarding performance in process. there better , more efficient way of removing first option of newly arriving elements?

the first option of newly arriving element '' , that's trying remove.

jq(".product-variations").each(function(){         var fresh_variant = jq(this).find("option:nth-child(1)").val();         if(fresh_variant == '')             {                 jq(this).find("option:nth-child(1)").remove();             }          jq(this).trigger('change');     });

i'd put flag : 

jq(".product-variations:not([data-set])").each(function(){         var fresh_variant = jq(this).find("option:nth-child(1)").val();         if(fresh_variant == '')             {                 jq(this).find("option:nth-child(1)").remove();             }          jq(this).trigger('change');         jq(this).attr('data-set',1);      });

so , when add item , set flag "set".

next time , scan new ones.(who don't have flag)

oh , , btw here better version of code : 

jq(".product-variations:not([data-set])").each(function(){        var $this=jq(this);        var $opt=$this.find("option:nth-child(1)");         var fresh_variant = $opt.val();         if(fresh_variant == '')             {                 $opt.remove();             }          $this.trigger('change');         $this.attr('data-set','whatever');      });

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