js身份证号输入自动判断其性别和出生年月日呢？进来来来来

<div class="input_itme">
                    <div id="box">
                        <p>*</p>
                        <p>证件号码</p>
                    </div>
                    <div class="enter">
                        <p><input type="number" id="certificatea" class="inp"  placeholder="请输入证件号" onchange=cates()></p>
                    </div>
                        <span id="code" class="tet">请输入证件号</span>
                </div>
            </div>
            <div class="input_list">
                <div class="input_itme">
                    <div id="box">
                        <p>*</p>
                        <p>性别</p>
                    </div>
                    <div class="enter">
                        <p><input readonly="readonly" id="sex" placeholder="输动填充"></p>
                    </div>
                </div>
                <div class="input_itme">
                    <div id="box">
                        <p>*</p>
                        <p>生日</p>
                    </div>
                    <div class="enter">
                        <p><input readonly="readonly" id="day" placeholder="输入身份证号自动填充" value=''></p>
                    </div>
                </div>

function cates() {
  //获取证件号码
  let certificatea = $('#certificatea').val();
  console.log($('#certificatea'));
  //提取性别信息
  let sex = parseInt(certificatea.charAt(16));
  console.log(sex);
  console.log(certificate);
  issex = sex % 2 === 0 ? '女' : '男';
  // console.log(issex);
  day = certificatea.substr(6, 8);
  //自动填充性别与生日
  document.getElementById('sex').value = issex;
  document.getElementById('day').value = day;
  console.log(issex);
}