Using Variables in document string

[jkelly295]

I have the following bit of code

for (var i=0; i<numLines; i++)
{
alert (document.form1.TQuantity+i.value);
fieldQty = fieldQty + document.form1.TQuantity+i.value;
}

The alert box lists the value as object[undefined]. Is there a way to include variables in this way..ie

document.form1.TQuantity0.value
document.form1.TQuantity1.value
....
..
.

 

[chebbi]

Dont use i.value,use just i and it will work. Badrinath Chebbi

http://www.bmchebbi.com

 

[drs9222]

You can't access an element of a form by adding a varible to it like this:
[tt]document.form1.TQuantity+i.value[/tt]

I think you confusing it with arrays where you would do it like this:
[tt]document.form1.TQuantity

[i]

.value[/tt]


Even then it won't work in this case because it's not an array. The only way to access it enter the whole name:
[tt]document.form1.TQuantity1.value[/tt]

The form object does have an array called elements which contains all the items in that form. You can use an array to loop through all the elements and then check to see if the name of the elemets matches the name your looking for.
Try this:

[tt]
fieldQty = &quot;&quot;;

//Loop through all the elements in the form
for (var i=0; i < document.form1.elements.length; i++)
{
//Retrive the next element from the form
TQuanityX = document.form1.elements;

//Check to ensure that the name of the element starts out
if (TQuanityX.name.toString().substr(0,9 ))
{
alert (TQuanityX.value);
fieldQty = fieldQty + TQuanityX.value;
}
}
[/tt]

 

[drs9222]

OOPS I messed this line up:
[tt]if (TQuanityX.name.toString().substr(0,9 ))[/tt]
It Should be:
[tt]if (TQuanityX.name.toString().substr(0,9 ) == &quot;TQuantity&quot[/tt]

 

[jkelly295]

That works like a charm...

Thanks