JavaScript validation: Trying to set a blank value to zero

tokuzumi · Jul 1, 2003

I have a form, broken down into columns of varying numbers of text boxes. The columns cannot total to greater than 100%. But all fields are not required. Here is how I do my validation:

function hiddenForm_OnSubmit()
{
var returnValue;
if ((document.form.fieldname.value > 100) || (document.form.fieldname.value < 0))
{
alert("Fieldname cannot be less than 0, or greather than 100&quot

;
returnValue = false;
form.fieldname.focus;
}
else if......and it goes on from there, with the same format as above. When I try to add the snippet of code below, I get an error that says "Object Expected", and a "Syntax Error". I want to make sure that if a field is not filled in, that JavaScript considers it a zero, so when I add the column together, if a value in the column has no value, JavaScript will think it's a big ole zero.
if ((document.form.field1.value == "&quot

|| (document.form.field1.value == null))
{
var field1 = "0" ;}
else {
var field1 = (document.form.field1.value);}

Thanks for any help.

mit99mh · Jul 1, 2003

i'm unsure about what values you want but have a look at this it might do what you want or you can adapt it.

Hope it helps

onpnt · Jul 1, 2003

how about running a loop throguh all the fields prior to running this condition to set empty val's to 0
for (i = 0; i <= MyFrom.length; i++)
{
if(MyForm.field.value=="&quot

MyForm.field.value=0

etc..

then you'll be able to test as a int

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mit99mh · Jul 1, 2003

it might help if i sent the code!

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>
<head>
<title>Untitled</title>

<script>
function hiddenForm_OnSubmit(){

var myForm = document.f
for(var i = 0; i < myForm.length; i++ ){
var e = myForm.elements;

if( ( e.type == "text&quot && ( e.value > 100 ) || ( e.value < 0 ) ) {
alert('if');
return false;
}
else if( (e.value == null) || (e.value == "&quot ){
alert('else');
e.value = 0;
}
}
return false;
}

</script>

</head>

<body>
<form name="f" action="" onsubmit="return hiddenForm_OnSubmit();">
<input type="text1" value="">
<input type="text2" value="">
<input type="submit">
</form>

SashiRaveendran · Jul 1, 2003

the value will never be null.
You could also include the adding script with the looping script etc...

function hiddenForm_OnSubmit(){
var col1=0;
var col2=0;
var myForm = document.f
for(var i = 0; i < myForm.length; i++ )
{
var e = myForm.elements;

if( e.type == "text&quot
{
var ename = e.name;
//alert(ename)
val = Number(e.value)
if (ename.indexOf("Col1&quot==0) {
if (( val > 100 ) || ( val< 0 )) {alert("Fieldname cannot be less than 0, or greather than 100" e.focus(); return false; break}
else {col1+=val}
}
else if (ename.indexOf("Col2&quot==0) {
if (( val > 100 ) || ( val < 0 )) {alert("Fieldname cannot be less than 0, or greather than 100" e.focus(); return false; break}
else {col2+=val}
}

}
}
alert("Col1 Total="+col1);
alert("Col2 Total="+col2);
}

SashiRaveendran · Jul 1, 2003

In addition to the last post. For the script to work I created 2 columns each with input text boxes in them. in the first column I prefixed the textbox names with 'Col1' and in the second column with 'Col2'

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JavaScript validation: Trying to set a blank value to zero

tokuzumi

Programmer

mit99mh

Programmer

onpnt

Programmer

mit99mh

Programmer

SashiRaveendran

Programmer

SashiRaveendran

Programmer

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