How do i turn this jquery into javascript -

How do i turn this jquery into javascript -

hi can't utilize jquery here. please help me alter these 3 selector javascript. tried document.getelementbyid('feedbacklightbox_txtname').value; doesn't work.

<script type="text/javascript"> function setbuttonstatus() { var tb1 = document.getelementbyid('feedbacklightbox_txtname').value; var tb2 = document.getelementbyid('feedbacklightbox_txtmessage').value; var tb3 = document.getelementbyid('feedbacklightbox_txtemail').value; if (tb1.length >= 5 && tb2.length >= 5 && tb3.length >= 5) makebtn(); else $('#feedbacklightbox_btnsubmit')[0].control.set_enabled(false); } function makebtn() { $('#feedbacklightbox_btnsubmit')[0].control.set_enabled(true); } function clearvalues(sender, args) { $('#feedbacklightbox_txtname').val(''); $('#feedbacklightbox_txtmessage').val(''); $('#feedbacklightbox_txtemail').val(''); args.set_cancel(true); homecoming false; } </script>

like this?

document.getelementbyid('feedbacklightbox_btnsubmit').control.set_enabled(false); document.getelementbyid('feedbacklightbox_txtname').value = '';

jfyi

when

$('#feedbacklightbox_btnsubmit')[0] // gives access html element object equivalent saying `document.getelementbyid('feed..)`.

javascript