Only open items when entering from the accordion menu

$(function(){
  // initial open-close state setting
  $(".accordionbox dt")
    .filter((i,e)=>isActive($(e).next()))
    .each(i,e)=>toggle($(e)));

  $(".accordionbox dt").on("click", function(){
    toggle($(this));
  });
});

function toggle($dt){
  $dt.next().slideToggle();
  // If active is present
  if($dt.children(".accordion_icon").hasClass('active')}{
    // Remove active
    $dt.children(".accordion_icon").removeClass('active');
  } else{
    // Add active
    $dt.children(".accordion_icon").addClass('active');
  }
}

// determination of initial open/close conditions
function isActive($dd){
  // Are certain radio buttons checked?
  if($dd.find('input[type="radio"].close:checked').length)
    return false;
  // Are you checking the check box?
  if($dd.find('input[type="checkbox"]:checked').length)
    return true;
  // Does the text box contain input?
  if($dd.find('input[type="text"]').filter(i,e)=>$(e).val()) .length)
    return true;
  return false;
}

.clearfix:after{
  content: ";
  display:block;
  clear —both;
}

.accordionbox{
  width: 50%;
  background:#FBDBC4;
  margin —10px auto40px;
  padding —20px;
}

.accordionlist dt{
  display:block;
  background: #ffff;
  padding —20px0 10px5px;
  border-top —1px solid#DFDFDF;
}

.accordionlist dt:first-child {
  border-top: none!important;
}

.accordionlist dt.title{
  padding-left —10px;
  float:left;
}

.accordionlistdd{
  display: none;
  background: #ffff;
  padding —00 20px15px;
}

.accordion_icon,
.accordion_iconspan{
  display:inline-block;
  transition —all.4s;
  box-sizing: border-box;
}

.accordion_icon{
  position:relative;
  width: 30px;
  height: 30px;
  float:right;
  margin-right —5px;
}

.accordion_iconspan{
  position:absolute;
  left —6px;
  width: 50%;
  height —2px;
  background-color:#F88789;
  border-radius:4px;
  - webkit-border-radius:4px;
  -ms-border-radius:4px;
  -moz-border-radius:4px;
  -o-border-radius:4px;
}

.accordion_iconspan:nth-of-type(1){
  top —5px;
  transform —rotate (0 deg);
  - webkit-transform:rotate (0 deg);
  -moz-transform:rotate (0 deg);
  -ms-transform:rotate (0 deg);
  -o-transform:rotate (0 deg);
}

.accordion_iconspan:nth-of-type(2){
  top —5px;
  transform —rotate (90 deg);
  - webkit-transform:rotate (90 deg);
  -moz-transform:rotate (90 deg);
  -ms-transform:rotate (90 deg);
  -o-transform:rotate (90 deg);
}


/*+, -Switch*/

.accordion_icon.active span:nth-of-type(1){
  display: none;
}

.accordion_icon.active span:nth-of-type(2){
  top —5px;
  transform —rotate (180 deg);
  - webkit-transform:rotate (180 deg);
  -moz-transform:rotate (180 deg);
  -ms-transform:rotate (180 deg);
  -o-transform:rotate (180 deg);
}

<link href="https://cdnjs.cloudflare.com/ajax/libs/meyer-reset/2.0/reset.css"rel="stylesheet"/>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<divid="accordion" class="accordionbox">
  <dl class="accordionlist">
    <dt class="clearfix">
      <div class="title">
        <p>Checked </p>
      </div>
      <p class="accordion_icon"><span>/span><span>>
    </dt>
    <dd><input type="checkbox" checked="checked"/>/dd>
    <dt class="clearfix">
      <div class="title">
        <p>Unchecked </p>
      </div>
      <p class="accordion_icon"><span>/span><span>>
    </dt>
    <dd><input type="checkbox"/></dd>
    <dt class="clearfix">
      <div class="title">
        <p> Entered </p>
      </div>
      <p class="accordion_icon"><span>/span><span>>
    </dt>
    <dd><input type="text" value="hoge"/></dd>
    <dt class="clearfix">
      <div class="title">
        <p>Unentered </p>
      </div>
      <p class="accordion_icon"><span>/span><span>>
    </dt>
    <dd><input type="text"/></dd>
    <dt class="clearfix">
      <div class="title">
        <p> Specific radio button checked</p>
      </div>
      <p class="accordion_icon"><span>/span><span>>
    </dt>
    <dd><input type="radio" class="close" checked="checked"/><input type="text" value="hoge"/>/dd>;
    <dt class="clearfix">
      <div class="title">
        <p> Not checked for certain radio buttons</p>
      </div>
      <p class="accordion_icon"><span>/span><span>>
    </dt>
    <dd><input type="radio" class="close"/><input type="text" value="hoge"/></dd>
  </dl>
</div>