JSFiddle - React, Tailwind, and code Playground

HTML

<button id="search-query-send">send</button>
<table cellpadding="0" cellspacing="0" border="1" width="100%" class="bookings-aligntop container-table">
	                    <tbody>
	                        <tr><th colspan="2"><h2><i class="fa fa-map-marker"></i>Locations</h2></th></tr>                       

								<td style="width:48%;float:left;" id="<?php echo $i; ?>">
									
									<div class="apartment-entry-container">
										
										<table cellpadding="0" cellspacing="0" border="1" width="100%" class="bookings-aligntop container-table apartment-entry">
		                    				<tbody>
		                    					<tr>
		                    						
		                    						<td width="66%">		                    							
		                    							<p class="selectthis"><input type="checkbox" name="selectthis" id="selectthis">Select this appartment</p>
		                    						</td>
		                    						
							                    </tr>
		                    				</tbody>
		                    			</table>

		                    			<table cellpadding="0" cellspacing="0" border="1" width="100%" class="bookings-aligntop container-table apartment-entry">
		                    				<tbody>
		                    					<tr>
		                    						
		                    						<td width="66%">		                    							
		                    							<p class="selectthis"><input type="checkbox" name="selectthis" id="selectthis">Select this appartment</p>
		                    						</td>
		                    						
							                    </tr>
		                    				</tbody>
		                    			</table>

		                    			<table cellpadding="0" cellspacing="0" border="1" width="100%" class="bookings-aligntop container-table apartment-entry">
		                    				<tbody>
		                    					<tr>
		                    						
		                    						<td width="66%">		                    							
		              ...

JavaScript

jQuery('#search-query-send').click(function() {
    jQuery('.selectthis input:checked').each(function() {
        var content = jQuery(this).parents('table').html();
        console.log(content);
    });
});