在 JavaScript 函数中插入一个选择标签

我有一个javascript函数，可以在选择后显示和隐藏div。div 包含表单的字段。div test2 具有div test1 的字段以及从数据库中获取数据的选择。所有字段均为必填项。

问题：

1）由于php代码，我很难在formgroup2变量中包含我的意思是（test2），选择。

 function hide () {
 console.log("whatever")
 }
function visibilite1(_this) {
var formgroup1 = '<div id="test1" class="divs"><label>Name </label>  
<input type="text" name= "name" id= "name" required>  </br><label>User 
name </label><input type="text" name= "username" id= "username"   
required>  </br><label >Password <em>*</em></label><input 
type="password"   name= "password" id= "password" required></br></div>'
var formgroup2 = '<div id="test2" class="divs"><label>Name </label> 
<input type="text" name= "name" id= "name" required><label>User name 
</label><input type="text" name= "username" id= "username"  required>
<label>Password <em>*</em></label><input type="password" name= "password"
id= "password" required><input type="text" name= "username"  
id=  "username"  required><label>Adress<em>*</em></label><input 
type="text" name= "adress" id= "adress" required></div>'
var formtestElement = document.getElementById('formtest'); 
if (_this.value == "test1") {
  formtestElement.innerHTML = formgroup1
 } else if (_this.value == "test2") {
  formtestElement.innerHTML = formgroup2
 };
 }
 </script>
<select name="role" id="role"
onchange="visibilite1(this);hide()" >
<option value='test1'>Year1</option>
<option value='test2'>Year2</option>
</select>
 <div id="formtest">
<div id="test1" class="divs">
<label>Name </label>
<input type="text" name="name" id="name" required>  </br>
<label>User name </label>
<input type="text" name="username" id="username" required></br>
<label>Password <em>*</em></label>
<input type="password" name="password" id="password" required></br>
</div>
</div>

一切都运行良好，但由于 php 代码，我无法在地址字段后在 formgroup2 变量中包含以下选择标签：

  <label>Client name</label>
  <?php 
  $sql="select ClientName from claims_follow_up.Client where id 
  !='10001' order by ClientName asc "; 
   $req=mysqli_query($dbc,$sql) or die("Erreur d'execution"); 
   ?> 
   <select name="ClientName" id="ClientName"
  onchange="
   var maVal = document.getElementById('ClientName').value;
    if (maVal == 'Create new client')
    {
  window.open('newClientCreate.php', 'blank', 'scrollbars=yes,    
   resizable=no, top=50, left=155, width=1200, height=700');
  };activer()" required disabled="true" onkeypress="activerSubmit()">
  <option value="">select client </option>
   <?php 
   while($d=mysqli_fetch_array($req)) 
   { 
   echo'<option
    value="'.$d['ClientName'].'">'.$d['ClientName'].'</option>'; 
     } 
   mysqli_free_result($req); 
   ?>
 <option value="Create new client"  style="color:blue;    
 font-weight:bold">create new client</option>
 </select>