Simple javascript question

[intrigue]

I have been searching this but i figure asking would be quicker then all the syntax errors i am bound to make.
Please can anyone tell me how i would check a form field for a correct input value of
"1"
"2"
"3"
and nothing else.
Thanks in advance
matt

[tomfmason]

I guess you could do this..

[code=php:0]
function checkField() {
    var field = document.getElementById('yourField').value
    if ((field !== 1) || (field !== 2) || (field !== 3)) {
        alert('Incorrect field value');
    } else {
        //do something else here
    }
}[/code]

Good Luck,
Tom