Mozilla onkeypress issues...

[rrocket]

Anyone know how to get onkeypress to work with keycode? I need to figure out what the keycode is before the character shows up in a textbox. Here is the code I have so far (see below). I can get the value to show with onkeydown or up, but it shows the typed value in the textbox even if it does not fit my criteria.

//Call it with onkeypress = return stripper(event)
function stripper(e)
{
    var bRes = false;
    if((e.keyCode >= 48)&&(e.keyCode<=57))
    {
        alert(e.keyCode);
        bRes=true;
    }
    else
    {
        alert("Numeric Values Only");
 
    }
    return bRes;
}
 

Basically what this is supposed to do is not show the typed character if it is anything but a number. With onkeypress Mozilla returns a 0 for the keyCode... No issues with IE.

[rrocket]

Found the answer on another post... Sort of anyway.
http://www.thescripts.com/forum/thread89237.html

Here is the code just to make things easier:

//call it with onkeypress="return stripper(event)"
function stripper(e)
{
    var bRes = false;
    if(e.keyCode > 0)
    {
        if((e.keyCode >= 48)&&(e.keyCode <= 57))
        {
            bRes=true
        }
        else
        {
            alert("Numeric values only");
        }
    }
    else
    {
        if((e.charCode >= 48)&&(e.charCode<=57))
        {
            //alert(e.charCode);
            bRes=true;
        }
        else
        {
            alert("Numeric Values Only");
            //alert(e.charCode);
        }
    }
    return bRes;
}
 

keyCode works fine in IE and charCode works for Mozilla... keyCode comes out as 0 in Mozilla so I check for that first as sort of a browser check and everyone seems happy at the moment.

[gits]

hi ...

glad to hear you got it working ... just a note in case you want to write it a little bit shorter :)

function stripper(e) {
    var bRes = false;
    var func = { 'true': 'keyCode', 'false': 'charCode' };
    var val  = (e.keyCode > 0).toString();
 
    if (e[func[val]] >= 48 && e[func[val]] <= 57) {
        bRes=true
    } else {
        alert("Numeric values only");
    }
 
    return bRes;
}
 

kind regards

[rrocket]

Cool thanks. Your version looks less like a hack, LOL. I am not familiar with what you actually did... What would I search for to get more information on that method?

[gits]

method? :) ... it simply uses a kind of dynamic function calls that would depend on the condition. the 'magic' is to use an object to store the function-names. the basics are:

var obj = {
    foo: function() { alert('foo'); },
    bar: function() { alert('bar'); }
};
 
// we may refer with:
obj.foo();
 
// or even:
obj['foo']();
 

kind regards

[rrocket]

Great, thanks for your help.

[gits]

no problem :) post back to the forums anytime you have more questions ...

kind regards