You can use JSON.parse()
HTML :
<section id="SSID" data-texts='"Text1", "Text2", "Text3"'></section>
JQUERY :
var Selection = JSON.parse('[' + $("#SSID").data("texts") + ']');
or
HTML :
<section id="SSID" data-texts='"Text1", "Text2", "Text3"'></section>
JQUERY :
var Selection = JSON.parse($("#SSID").data("texts"));
FYI : But it would be better to store the actual JSON as the data attribute value. For eg : data-texts='["Text1", "Text2", "Text3"]'
and parse it directly.
UPDATE : Or you can do it using Array#map
method and String#split
method.
var Selection = $("#SSID").data("texts").split(',').map(JSON.parse);
console.log(Selection);
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<section id="SSID" data-texts='"Text1", "Text2", "Text3"'></section>