<!DOCTYPE html>
<html>
<body>
Some extra text.
<span id='target'>Some test text for testing.</span>
Some extra text.
<script>
    function select() {
        var range = document.createRange();
        range.selectNode(document.getElementById('target'));
        window.getSelection().addRange(range);
    }
    window.onload = select;
</script>
</body>
</html>