SnezhanaLast,
<!DOCTYPE HTML>
<html>
<head>
<title>Untitled</title>
<meta charset="utf-8">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.0/jquery.min.js"></script>
<script>
$(function(){
var a = $.map($('.user_address, .user_street, .user_home'),function(el) {
return el.value
}) ;
alert(JSON.stringify(a)) ;
})
</script>
</head>
<body>
<div class="ln">
<span class="txt"><i>*</i></span>
<textarea class="required user_street" style="resize: none;" rows="5" cols="5" placeholder="">street</textarea>
<textarea class="required user_home" style="resize: none;" rows="5" cols="5" placeholder="">home</textarea>
</div>
</body>
</html>