JSFiddle - React, Tailwind, and code Playground
by GaryC123
HTML
<select name="addon-28-bicycle-info[association-membership-1]" id="addon-28-bicycle-info[association-membership-1]" onchange="findSum()">
<option>Association Membership</option>
<option value="yes">Yes</option>
<option value="no">No</option>
</select>
JavaScript
function findSum() {
var myBox8 = document.getElementById('addon-28-bicycle-info[association-membership-1]').value;
if (myBox8 == 'yes') {
myBox9 = 0.90
} else {
myBox9 = 1
}
alert(myBox9)
//var myResult = parseFloat(myResultSub) * parseFloat(myBox9);
}