JSFiddle - React, Tailwind, and code Playground

by lollero

HTML

<span id="priceToSwap3">$238</span>

<select id="trapsize">
 <option data-price="238">foo</option>
 <option data-price="288">foo</option>
</select>

<select id="trapfabric">
 <option data-price="0">foo</option>
 <option data-price="20">foo</option>
</select>

JavaScript

$('#trapfabric, #trapsize').on('change', function() {    
    $('#priceToSwap3').text( '$' + $(':selected', this).data("price") );
});