jQuery Validasi HTML5 Input

<script>
$(function(){
// validate input numeric
$('input[type="number"]').keypress(function (e) {
    var a = e;
    var regex = new RegExp("^[0-9-,.]+$");
    var str = String.fromCharCode(!e.charCode ? e.which : e.charCode);
    if (regex.test(str) || a.keyCode==46||a.keyCode==8||a.keyCode==9||a.keyCode==27||a.keyCode==13||(a.keyCode==65&&a.ctrlKey===true)||(a.keyCode>=35&&a.keyCode<=39)) {
        return true;
    }
    e.preventDefault();
    return false;
});
// validate input email
$('input[type="email"]').keypress(function (e) {
    var a = e;
    var regex = new RegExp("^[a-zA-Z0-9-_.@]+$");
    var str = String.fromCharCode(!e.charCode ? e.which : e.charCode);
    if (regex.test(str) || a.keyCode==46||a.keyCode==8||a.keyCode==9||a.keyCode==27||a.keyCode==13||(a.keyCode==65&&a.ctrlKey===true)||(a.keyCode>=35&&a.keyCode<=39)) {
        return true;
    }
    e.preventDefault();
    return false;
});
// validate input date
$('input[type="date"]').keypress(function (e) {
    var a = e;
    var regex = new RegExp("^[0-9-\/]+$");
    var str = String.fromCharCode(!e.charCode ? e.which : e.charCode);
    if (regex.test(str) || a.keyCode==46||a.keyCode==8||a.keyCode==9||a.keyCode==27||a.keyCode==13||(a.keyCode==65&&a.ctrlKey===true)||(a.keyCode>=35&&a.keyCode<=39)) {
        return true;
    }
    e.preventDefault();
    return false;
});
// validate input telphone
$('input[type="tel"]').keypress(function (e) {
    var a = e;
    var regex = new RegExp("^[0-9+ ]+$");
    var str = String.fromCharCode(!e.charCode ? e.which : e.charCode);
    if (regex.test(str) || a.keyCode==46||a.keyCode==8||a.keyCode==9||a.keyCode==27||a.keyCode==13||(a.keyCode==65&&a.ctrlKey===true)||(a.keyCode>=35&&a.keyCode<=39)) {
        return true;
    }
    e.preventDefault();
    return false;
});
</script>