Checking objects created with appendchild

I am creating a form with an unlimited number of input boxes for sets of hardware and serial numbers. The user could press a button to generate (via appendchild) two new input boxes named newHardwareInputX and newSerialInputX, where X is an integer which increases by one for each new set of inputs.

Before populating the form with the new set of input boxes, I wanted to check the previous set using something like the following function to make sure there was something typed into those boxes:

if ((Form.NewHardwareInput1.value == “” || Form.NewSerialInput1.value == “”))
{Form.NewHardwareInput1.focus();
alert (“Please enter a Product and Serial number for each new component”);
return false}

My question is: I’m not sure how to replace the 1 in the previous example with a variable. I think I’m getting my quote placement screwed up.

Also in #JavaScript _↴