The main mission was to add the values from two select dropdowns to one hidden input. That works great but now if a user decides to choose another input, it adds to the hidden input value rather than replace it.
Live Code: DEMO
$('#expireMM').change(function() {
var theMonth = $(this).val();
$("#expiry").val( theMonth )
})
$('#expireYY').change(function() {
var theYear = $(this).val();
$('#expiry').val($('#expiry').val() + "/" + theYear );
})
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<select name="expireMM" id="expireMM" >
<option value="">Month</option>
<option value="01">January</option>
<option value="02">February</option>
<option value="03">March</option>
<option value="04">April</option>
<option value="05">May</option>
<option value="06">June</option>
<option value="07">July</option>
<option value="08">August</option>
<option value="09">September</option>
<option value="10">October</option>
<option value="11">November</option>
<option value="12">December</option>
</select>
<select name="expireYY" id="expireYY" >
<option value="">Year</option>
<option value="17">2017</option>
<option value="18">2018</option>
<option value="19">2019</option>
<option value="20">2020</option>
<option value="21">2021</option>
</select>
<input class="inputCard" type="hidden" name="expiry" id="expiry" maxlength="4" />
You can update the value of the #expiry
input in an external function, and not based on the current value:
function getExpirationDate() {
var monthVal = $('#expireMM').val();
var yearVal = $('#expireYY').val();
if (monthVal && yearVal) {
$('#expiry').val(`${monthVal}/${yearVal}`);
} else if (monthVal) {
$('#expiry').val(monthVal);
}
console.log($('#expiry').val());
}
$('#expireMM').change(getExpirationDate)
$('#expireYY').change(getExpirationDate)
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<select name="expireMM" id="expireMM" >
<option value="">Month</option>
<option value="01">January</option>
<option value="02">February</option>
<option value="03">March</option>
<option value="04">April</option>
<option value="05">May</option>
<option value="06">June</option>
<option value="07">July</option>
<option value="08">August</option>
<option value="09">September</option>
<option value="10">October</option>
<option value="11">November</option>
<option value="12">December</option>
</select>
<select name="expireYY" id="expireYY" >
<option value="">Year</option>
<option value="17">2017</option>
<option value="18">2018</option>
<option value="19">2019</option>
<option value="20">2020</option>
<option value="21">2021</option>
</select>
<input class="inputCard" type="hidden" name="expiry" id="expiry" maxlength="4" />