onclick获取数据并插入textarea [关闭]

I would like to fetch all contact rows which are assigned to a group for example 'Mumbai2015'. On compose email page, I would list all groups user owns, and also want that when user clicks a particular group, all assigned contacts should be insert into textarea separated by comma(,).

I would like to get this done over an onclick event with no browser refreshing. Is that possible?

<script>
function getFunction(str)
{
var thought = jQuery("textarea#recemail").val();
var getemail = "NULL";
<?php 
$phpvar='"+str+"';
$txtcont = '"+thought+"';                 
$ppwp = $phpvar;
// Check connection
if (mysqli_connect_errno())
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
$usern = $_SESSION['login_user'];
$sql2 = "select GROUP_CONCAT(email SEPARATOR ',') allemail from contacts,groups where groups.grpname=contacts.grp and contacts.user='".$usern."' and contacts.level=2 and groups.ID='".$ppwp."';";
$retval2 = mysqli_query($con,$sql2);
$row2 = mysqli_fetch_array($retval2);
$row_cnt = mysqli_num_rows($retval2);
if($row_cnt > 0) {
$getemail = $row2['allemail'];
echo 'var getemail = "'.$getemail.'";';
}
?>
return getFunction2(getemail);
}
function getFunction2(getemail)
{
var thought = jQuery("textarea#recemail").val();
document.getElementById("recemail").innerHTML= thought+getemail+",";
}</script>


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