For example this hotel is 3 rooms:
<div id="hotel_room">
<select name="room_1" price="30" multiple="multiple">
<option value="1">option 1</option>
<option value="2">option 2</option>
<option value="3">option 3</option>
<option value="4">option 4</option>
</select>
<select name="room_2" price="40" multiple="multiple">
<option value="1">option 1</option>
<option value="2">option 2</option>
<option value="3">option 3</option>
<option value="4">option 4</option>
</select>
<select name="room_3" price="50" multiple="multiple">
<option value="1">option 1</option>
<option value="2">option 2</option>
<option value="3">option 3</option>
<option value="4">option 4</option>
</select>
<div id="hotel_room">
<select name="room_1" price="30" multiple="multiple">
<option value="1">option 1</option>
<option value="2">option 2</option>
<option value="3">option 3</option>
<option value="4">option 4</option>
</select>
<select name="room_2" price="40" multiple="multiple">
<option value="1">option 1</option>
<option value="2">option 2</option>
<option value="3">option 3</option>
<option value="4">option 4</option>
</select>
<select name="room_3" price="50" multiple="multiple">
<option value="1">option 1</option>
<option value="2">option 2</option>
<option value="3">option 3</option>
<option value="4">option 4</option>
</select>
<select name="room_3" price="50" multiple="multiple">
<option value="1">option 1</option>
<option value="2">option 2</option>
<option value="3">option 3</option>
<option value="4">option 4</option>
</select>
selected
price
value
Look at this code, maybe it will help you.
$('#button1').on('click', function() {
$('select').each(function(index) {
console.log( $(this).attr('name') + ': price=' + $(this).attr('price') + ' selected option: ' + $(this).val() );
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="hotel_room">
<select name="room_1" price="30" multiple="multiple">
<option value="1">option 1</option>
<option value="2">option 2</option>
<option value="3">option 3</option>
<option value="4">option 4</option>
</select>
<select name="room_2" price="40" multiple="multiple">
<option value="1">option 1</option>
<option value="2">option 2</option>
<option value="3">option 3</option>
<option value="4">option 4</option>
</select>
<select name="room_3" price="50" multiple="multiple">
<option value="1">option 1</option>
<option value="2">option 2</option>
<option value="3">option 3</option>
<option value="4">option 4</option>
</select>
<button id="button1">Click</button>
</div>