PHP数据传输到Jquery和打印到HTML

有以下html注册表单

<form method="POST" id="formPost" action="check/register_form.php">
            ...
<div id="emailCheck" align="center"></div>
<input type="text" style="margin-bottom:0.1px;" name="email" id="email" placeholder="Email" required > 
            ...
            <button  type="register" id="btnRegister">
                Create Account</button>
            </form>

然后在register_form.php中检查是否已经有人注册了以下电子邮件。电子邮件必须是唯一的

 foreach ($rowset as $projectRow) {
        if($this->email === $projectRow->email){
        // Used for sending variable to Jquery
        $emailCh = array(
        'emailCheck' => "This e-mail: ".$projectRow->email ." is already registered",
        );
        echo json_encode($emailCh);
        exit();
        }
    }

地点:

1. $rowset is Select STATEMENT FROM TABLE
要与比较的$projectRow对象
2. $this->email is value $_POST['email'];
3. $projectRow->email是来自数据库表的email行

尝试进行jQuery/Ajax检查。为此，$projectRow->email被放入一个数组中，然后与$projectRow->email进行转换。在script。js中是这样的>

    else 
{   
$.ajax({
    url: 'C:/xampp/htdocs/bootSite/check/register_form.php',
    data: { test: ms },
    success: function(response) {
        $('#emailCheck').text(response);
    }
}); 
 $.post(...

是否支持?如果有可能，那怎么做呢?