JSFiddle - React, Tailwind, and code Playground

HTML

<input id="claimformns_freseniusWCBeanInsuredLocationCode" name="freseniusWCBean.insuredLocationCode" cfrequired="Mask" class="cfGradient inputField" type="text" cftype="claimLocationCode" value="" maxlength="12" spellcheck="false" tabindex="90069">

JavaScript

$(document).on("keyup", "#claimformns_freseniusWCBeanInsuredLocationCode", function() {
  if ($('#claimformns_freseniusWCBeanInsuredLocationCode').val().substr(0, 1) == "-") {
    $('#form_name').val("");
    return false;
  }
});