Can I get highlighted text with JQuery? [duplicate]

You mean text selection with mouse, so check here, DEMO http://jsfiddle.net/yeyene/GYuBv/2/

$('#showSelected').on('click', function(){

    var text = "";
    if (window.getSelection) {
        text = window.getSelection().toString();
    } else if (document.selection && document.selection.type != "Control") {
        text = document.selection.createRange().text;
    }

    alert(text);       
});

If you want to do some changes around selected text, check this DEMO http://jsfiddle.net/yeyene/GYuBv/3/