Untitled

$.get(url, function (res, data) {
    response = res.responseText;
}

<html>
<head>
</head>

<body>
    <div id="version">1</div>
</body>

</html>

var response = '<html><head></head><body><div id="version">1</div></body></html>';

var version = $( response ).filter( '#version' ).text();

var version = $(res.responseText).find('#version').html();

var version = document.getElementById("version").innerHTML;

var version = $("#version").text();