ensure filter printable char in jquery on keyup event

Question

How can I ensure that user press "printable" character in jquery?

I try this but it doesn't work

$("#foo").keyup(function (e) {
    if (e.charCode) {
        console.debug('this is printable char');
    }
});

I would want only numbers, A-Z a-z character, and also "è,$,%" etc, but not arrow, enter,f5 etc

Only numbers, A-Z a-z character, and also "è,$,%" etc, but not arrow, enter,f5 etc — paganotti, May 21 '12 at 11:37

score 1 · Answer 1 · answered May 21 '12 at 11:31

1

Try:

$("#foo").keyup(function (e) {
    if (e.which < 0x20) {
        console.debug('this is not printable char');
        return;
    }
    else {
        console.debug('this is printable char');
    }
});

answered May 21 '12 at 11:31

Sudhir Bastakoti

99,167
15
158
162

space is printable - it would not catch it. – Nimrod Oct 31 '20 at 10:26

score 0 · Answer 2 · edited May 23 '17 at 10:29

0

<script type="text/javascript">
    $("input").keypress(function (e) {
        if (e.which !== 0 && e.charCode !== 0) {
            alert(String.fromCharCode(e.keyCode|e.charCode));
        }
    });
</script>

Seems tow work just fine with jQuery 1.4.2, FF, IE, Chrome.

To delve into the mess that is JS keyboard event handling, see: JavaScript Madness: Keyboard Events

Courtesy

edited May 23 '17 at 10:29

Community

1
1

answered May 21 '12 at 11:31

Ankur Verma

5,793
12
57
93

ensure filter printable char in jquery on keyup event

2 Answers2