Web Design Discussion - validating an array in javaScript

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validating an array in javaScript

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Category: General Discussion
Forum Name: Web Design Discussion
Forum Description: Discussion on web design and development subjects.
URL: https://forums.webwiz.net/forum_posts.asp?TID=24939
Printed Date: 29 March 2026 at 2:07pm
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Topic: validating an array in javaScript

Posted By: RCorr
Subject: validating an array in javaScript
Date Posted: 03 December 2007 at 7:04pm

Hi there,

I have a form with a series of check boxes with the same name - availability[].   The square brackets makes it as an array of course :-) .

In javaScript, I am trying to determine if at least one of the check boxes is checked, but my code is producing an error. This is want I have:

bAvailable = false;

for(var i=0; i < document.volunteer_app("availability[]").length; i++){

    if (document.volunteer_app("availability[" + i + "]").checked)
        bAvailable = true;
}

the error occurs on the following line:

     if (document.volunteer_app("availability[" + i + "]").checked)

Any suggestions as to what is wrong with my code.

Thanks,

RCorr