You can remove the line: alert("here"); from the function - I put that there for testing.
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Validate form array
I'm having prblems with validating a form which uses an array.
I can work with values of normal textboxes etc, but with an array it generates an error - and I need the array as it is dynamically generated in PHP.
Here's the form code:
<FORM name="form1" action="/script.php" onsubmit="return validateForm(form1)">
<input type = "text" name = "length[1]">
<input type = "text" name = "length[2]">
<input type = "text" name = "length[3]">
<input type="submit">
</FORM>
<SCRIPT Language="JavaScript">
function validateForm(theForm)
{ alert(theForm.length[1].va
</SCRIPT>
Do i need to do anything special to read the array element's values?
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Answers
i dont think you can name your text boxes that. Give them names like length1, length2, length3
then you can access them like this
for( intIndex = 0; intIndex < form1.elements.length; intIndex++ )
{
if( form1.elements[ intIndex ].name == "length" + intIndex )
{
alert( form1.elements[ intIndex ].value );
}
}
You don't need brackets to define an array in php. If you have textboxes named the same thing, then you can refer to them as an array in php.
This:
<FORM name="form1" action="script.php" onsubmit="return validateForm();" method="post">
<input type ="text" name ="txtlength">
<input type ="text" name ="txtlength">
<input type ="text" name ="txtlength">
<input type="submit">
Can be referred to in PHP as this:
$_POST['txtlength'][0]
$_POST['txtlength'][1]
$_POST['txtlength'][2]
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by: cLFlaVAPosted on 2004-09-16 at 06:26:06ID: 12074434
Here is what your function should look like:
function validateForm() {
alert("here");
for (var i = 0; i < form1.txtlength.length; i++) {
alert(form1.txtlength[i].v
}
}
And here is what your html should look like:
<FORM name="form1" action="script.php" onsubmit="return validateForm();">
<input type ="text" name ="txtlength">
<input type ="text" name ="txtlength">
<input type ="text" name ="txtlength">
<input type="submit">
</FORM>
Note: to actually stop the form from submitting (say, if your validation is invalid - a user enters an invalid value or something), you'll have to return false in the function.