rewrite jQuery to vanilla JS

I want to get rid of jQuery in one of my old scripts. There are about 60 lines containing stuff like:

$('.btnPrint').show();
$('#year').bind('cut keyup change paste', function () { ... }
$("#nav a").each(function (index) { ... }
$("#id").text(newValueString);
$("#street").val();
$("#number").val('');
parseFloat(0 + $("#size").val().replace(",", "."), 10);
$('#trRadioApartment').removeClass('disabled');
$('#inputRadioApartment').removeAttr("disabled");
$('#trRadioApartment').addClass('disabled');
$('#inputRadioApartment').attr("disabled", true);
$('#inputRadioApartment').prop("checked", false);
$("#baujahr").addClass("invalid_input");
$("#invalid").css("display", "inline");
$("#invalid").removeClass("invalid_input");
$("#invalid").css("display", "none");

This needs to be cleaned up, while being compatible to IE11+