JSFiddle - React, Tailwind, and code Playground
HTML
<script src="https://code.jquery.com/jquery-1.10.2.js"></script>
<input id="value1" type="hidden" name="value1" value="352880,350906,341563">
JavaScript
var value = $('#value1').val();
var values = value.split(",");
var i = values.indexOf("352880");
if(i != -1) {
values.splice(i, 1);
}
$('#value1').val(values.join());
alert(values);