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Javascript Validation


mckeegan375

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Hi Guys

 

Was hoping someone could help me out with a (simple?) javascript validation i ahve on my form. I have a similar thing working on another form so cant understand why this isnt working.

 

within the <head> tag i have:

 

<script type="text/javascript">

function validateForm(newcat) {

if(document.newcat.category.selectedIndex == 0) {

alert("Please select a category");

document.forms.newcat.category.focus();

return false;

}

}

</script>

 

My form starts with:

<form name="newcat" method="POST" action="<?php echo $PHP_SELF ?>" onSubmit="return validateForm(newcat);">

 

and there is a dropdown list called "category" within the form. Is it just something simple that im missing?

 

Any help would be greatly appreciated.

 

Cheers

Andy

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onSubmit="return validateForm(newcat);"

 

Here you're trying to pass a variable called "newcat" that doesn't exist. To pass a string you'd need to have quotes around it:

 

onSubmit="return validateForm('newcat');"

 

However it's easier to pass a special variable called "this", which represents the element's object, and use that within the function. So intead of calling document.newcat.category.selectedIndex for example, you'd use newcat.category.selectedIndex.

 

 

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