giving focus after slideDown - input changes its height

Question

in the example below click on button and wrap will toggle
problem - the first input changes its height and it makes an aditional slideDown of entire wrap
the reason is $('#inpname').focus(); line - without it everything is ok
how to keep the focus and avoid this additional effect ?

update

I tried - without success:

$('button').on('click', async function(){
    await $('#wrap').slideToggle();
  $('#inpname').focus();
});

$('button').on('click', function(){
    $('#wrap').slideToggle();
  $('#inpname').focus();
});

.wrap{display:none;}

.inpname, .inpcontact{
    display:block;
    height:36px;
    width:90%;
    padding:0 20px;
    background:#eee;
    border-radius:25px;
    font-family:montserrat;
    font-size:1.6rem;
    font-weight:500;
    letter-spacing:1px;
    color:#333;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<button>CLICK</button>
<br><br>
<div class='wrap' id='wrap'>
<input type='text' class='inpname' id='inpname' placeholder='lorem'>
<br>
<input type='text' class='inpcontact' id='inpcontact'>
<br>
</div>

Answer 1

What you can do is this:

$('#wrap').slideToggle(function() {
  $('#inpname').focus();
});

This will run your focus after the slideToggle is done.

Demo

$('button').on('click', function() {
  $('#wrap').slideToggle(function() {
    $('#inpname').focus();
  });
});

.wrap {
  display: none;
}

.inpname,
.inpcontact {
  display: block;
  height: 36px;
  width: 90%;
  padding: 0 20px;
  background: #eee;
  border-radius: 25px;
  font-family: montserrat;
  font-size: 1.6rem;
  font-weight: 500;
  letter-spacing: 1px;
  color: #333;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<button>CLICK</button>
<br><br>
<div class='wrap' id='wrap'>
  <input type='text' class='inpname' id='inpname' placeholder='lorem'>
  <br>
  <input type='text' class='inpcontact' id='inpcontact'>
  <br>
</div>