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text box validation using OR

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jwpward

jwpward

Programmer
Sep 5, 2003
45
GB
I need to do some verification on a 'title' text box in an html form. It needs to adhere to either Mr, Mrs, Miss etc.
I was going to use something like this...

if (Title.value != ("Mr" || "Mrs" || etc)){
alert("Invalid Title. Must be either Mr, Mrs, Ms, Miss, Dr, Prof, Rev, Sir, Lady, Lord");
return;
}

...but it's a bit messy and the boolean OR doesn't seem to work. Maybe i should put all the values in an array, and then do the validation on that?
Any help would be much appreciated.
Cheers
p.s. i can't use a drop down list due to data reasons
 
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If you can't use a dropdown selection box, then the array would be my recommendation:

Code: 
function ValidateTitle() {
    var titles = new Array("Mr", "Mrs", "Ms", "Miss", "Dr", "Prof", "Rev", "Sir", "Lady", "Lord");
    var titleValid = false;
    var theTitle = document.forms[0].title.value;
    for(var x=0; x<titles.length; x++) {
        if(theTitle == titles[x]) {
            titleValid = true;
        }
    }
    if(!titleValid) {
        alert(&quot;Invalid Title. Must be either: Mr, Mrs, Ms, Miss, Dr, Prof, Rev, Sir, Lady, or Lord&quot;);
        return false;
    }
    return true;
}

NOTE: This won't check for case mismatches.

IMHO - I'd go for the SELECT dropdown list.

Hope this helps.

Pete.


Web Developer / Aptrix CMS (LWWCM) Specialist
w: e: Pete.Raleigh(at)lclimited.co.uk
 
Upvote 0 Downvote
Woops... used a reserve name for my field name :-(

Try this instead:
Code: 
<html>
<head>
	<title>User Title...</title>
<script language=&quot;JavaScript&quot;>
function ValidateTitle() {
    var titles = new Array(&quot;Mr&quot;, &quot;Mrs&quot;, &quot;Ms&quot;, &quot;Miss&quot;, &quot;Dr&quot;, &quot;Prof&quot;, &quot;Rev&quot;, &quot;Sir&quot;, &quot;Lady&quot;, &quot;Lord&quot;);
    var titleValid = false;
    var theTitle = document.forms[0].usertitle.value;
    for(var x=0; x<titles.length; x++) {
        if(theTitle == titles[x]) {
            titleValid = true;
        }
    }
    if(!titleValid) {
        alert(&quot;Invalid Title. Must be either: Mr, Mrs, Ms, Miss, Dr, Prof, Rev, Sir, Lady, or Lord&quot;);
        return false;
    }
    return true;
}
</script>
</head>
<body>
<form onsubmit=&quot;return ValidateTitle();&quot;>
	<input type=&quot;text&quot; name=&quot;usertitle&quot;>
	<input type=&quot;submit&quot;>
</form>
</body>
</html>

Pete.


Web Developer / Aptrix CMS (LWWCM) Specialist
w: e: Pete.Raleigh(at)lclimited.co.uk
 
Upvote 0 Downvote
Thanks for your help.

The titles need to be in that exact case, so case mismatching isn't an issue. That should sovle it perfectly.

Thanks again
 
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