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form validation

Discussion in 'Software Development' started by DJ-TM, Sep 17, 2003.

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  1. DJ-TM

    DJ-TM Thread Starter

    Joined:
    Jul 23, 2003
    Messages:
    38
    ok i just need a little help with validating a select box on a form.

    Form information:

    Form name = raise
    Select box name = issue

    i have wrote this function

    <script type="javascript">
    function validate()
    {
    if document.raise.issue[document.raise.issue.selectedindex].value ="0"
    {
    alert("Please select an issue type from the drop down list")
    else
    }
    location="confirmation.html"
    }
    </script>

    and i call it using <submit onclick="validate()">

    i think im nearly there but its not working, could anyone point me in the right direction.
     
  2. lora_3677

    lora_3677

    Joined:
    Aug 4, 2003
    Messages:
    1,228
    You really should add some variables, so later down the road you can reuse the script easily by just changing one line, instead of a bunch of code.... but... try this...

    if raise.issue.options[raise.issue.selectedIndex].value ="0"

    I had a program like this and I set up variables, like this:

    stxtNumber=frmPart.optPart.options[frmPart.optPart.selectedIndex].value;
    stxtBrand=frmPart.optBrand.options[frmPart.optBrand.selectedIndex].value;

    Then you can use it for the validation

    if stxtNumber == "0"
    {
    alert... blah blah
    }

    Try it...
     
  3. Mithrilhall

    Mithrilhall

    Joined:
    Mar 28, 2001
    Messages:
    781
    Have you tried calling it like so?

    <input name="button" type="button" onClick="validate();">
     
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