JSFiddle - React, Tailwind, and code Playground

HTML

<div class="sameRow">
		<div id="uniquediv1">
			<select class="sameSelect">
				<option>1</option>
				<option selected>2</option>
			</select>
		</div>
	</div>
	<br />
	<div class="sameRow">
		<div id="uniquediv2">
			<select class="sameSelect">
				<option>1</option>
				<option>2</option>
				<option>3</option>
				<option selected>4</option>
			</select>
		</div>
	</div>
	<br />
	<div class="sameRow">
		<div id="uniquediv3">
			<select class="sameSelect">
				<option value="1">1</option>
				<option value="2">2</option>
				<option value="3">3</option>
				<option value="4">4</option>
				<option value="5">5</option>
				<option  value="6" selected>6</option>
			</select>
		</div>
	</div>

JavaScript

$(document).ready(function(){
        $('.sameRow').each(function(i){
            var getID = $(this).find('.sameSelect').parent().attr("id");
			alert("array row number " + (i + 1) + " is " + getID);
        });
	});