JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.11.4/jquery-ui.min.css">
<script src="https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.11.4/jquery-ui.min.js"></script>
<div class="col-xs-12 col-sm-6 col-md-6">
  <label>Total work experience</label>
  <label class="years_lab" id="txt_expy"><span></span></label> Years
  <label class="years_lab" id="txt_expm"><span></span></label> Months
</div>
<div id="expy-0" class="wrk_exp cloned-row3">
  <div class="row">
    <div class="col-xs-6 col-sm-3 col-md-3 col-lg-3">
      <label><span class="required-star-black">*</span>Job Title</label>
      <br/>
      <input type="text" maxlength="50" class="chk_Field ipt_Field required_Field chk_Field_exp" id="txt_Jbt" name="txt_Jbt" />
    </div>
    <div class="col-xs-6 col-sm-3 col-md-3 col-lg-3">
      <label><span class="required-star-black">*</span>Employer</label>
      <br/>
      <input type="text" maxlength="50" class="chk_Field ipt_Field required_Field chk_Field_exp" id="txt_Empl" name="txt_Empl" />
    </div>
    <div class="col-xs-6 col-sm-3 col-md-3 col-lg-3">
      <label><span class="required-star-black">*</span>From Date</label>
      <br/>
      <div class="input-group">
        <input type="text" placeholder="MM/DD/YYYY" class="chk_Field chk_Field_exp ipt_Field startDate datepicker required_Field" id="txt_Fdob" name="txt_Fdob" />
        <p class="form-control-feedback"><i class="fa fa-calendar  custom-mar"></i></p>
      </div>
    </div>
    <div class="col-xs-6 col-sm-3 col-md-3 col-lg-3">
      <label><span class="required-star-black">*</span>To Date</label>
      <br/>
      <div class="input-group">
        <input type="text" placeholder="MM/DD/YYYY" class="chk_Field chk_Field_exp ipt_Field endDate datepicker required_Field" id="txt_Tdob" name="txt_Tdob" />
        <p class="form-control-feedback"><i class="fa fa-calendar custom-mar"></i></p>
      </div>
    </div>
  </div>
  <div class="row">
    <div class="col-xs-12...

JavaScript

var diffDays = 0,
          diffMonths = 0,
          diffYears = 0,
          dateRegex = new RegExp("(0|1)[0-9]\/[0-3][0-9]\/(19|20)[0-9]{2}");
        $(".datepicker").datepicker({
          dateFormat: "mm/dd/yy",
          changeMonth: true,
          yearRange: "-100:+0",
          changeYear: true,
          maxDate: new Date(),
          showButtonPanel: false,
          beforeShow: function() {
            setTimeout(function() {
              $('.ui-datepicker').css('z-index', 99999999999999);
            }, 0);
          }
        });
        var count = 0;

        function monthDiff(d1, d2) {
          var months;
          months = (d2.getFullYear() - d1.getFullYear()) * 12;
          months -= d1.getMonth();
          months += d2.getMonth();
          return months <= 0 ? 0 : months;
        }