How to display textarea value when print in the browser?

Question

I'm create some form for some kind of slip and it will use browser printing service like chrome, firefox, and another browser but I can't see the input value when I print preview those form.

<textarea style="width:370px; min-width:370px; max-width:370px; min-height:100px; max-height:100px; height:100px; border:none; resize: none; overflow:hidden" placeholder="hello" ></textarea>

Javascript

var divToPrint=document.getElementById("printdata");
        var newWin= window.open();
        newWin.document.write(divToPrint.innerHTML);
        newWin.print();
        //newWin.close();