Validating 10 Textboxes using for loop

[Sriku]

I have created ten textboxes and name them as "txt1,txt2,..txt10"
(i.e just changing suffix by consecutive number).

Now I have to validate these ten textboxes on Submit event (Say..No textbox should accept alphabet).

I trying to use for loop to validate this i.e. trying to change the suffix of textbox name in each iteration.

for(var i=1;i<=10;i++)
 {
   if(document.myform.txt+i+.value==0)
    {
      alert("Cannot be empty!");
   }
 }

But this is not working.

So please give me the suitable code for my above requirement.

[gits]

hi ...

first ... you have to refer correctly to the nodes:

for (var i = 1; i <= 10; i++) {
    if(document.myform[txt + i].value == 0) {
        alert("Cannot be empty!");
    }
}

kind regards

[vee10]

hi...

and this should be there to check if it is empty or not

if(document.myform["txt" + i].value =="")

if defaultly u r assigning 0 then it should be 0

hi gits.....

i am getting error that it is null
at document.myform

myform is the id of the form
[HTML]<form id="myform">[/HTML]

Can u plz tell me why i am getting that

hi ...

first ... you have to refer correctly to the nodes:

for (var i = 1; i <= 10; i++) {
    if(document.myform[txt + i].value == 0) {
        alert("Cannot be empty!");
    }
}

kind regards

[gits]

of course ... it must be:

document.myform['txt' + i].value

[gits]

and to check for 0 should work ... just try it out:

var val = 0 == '';

here var val will be true ... since javascript converts the types to compare the values. in case you want to check for same types use the identity operator:

var val = 0 === '';

here var val will get a false assigned.

kind regards

[acoder]

hi gits.....

i am getting error that it is null
at document.myform

myform is the id of the form
[HTML]<form id="myform">[/HTML]

Can u plz tell me why i am getting that

document.myform assumes a form named "myform", not with an id of "myform". So give your form a name "myform", or use document.getElementById("myform") to access the form.

[vee10]

ok
thanks for the reply

document.myform assumes a form named "myform", not with an id of "myform". So give your form a name "myform", or use document.getElementById("myform") to access the form.

[acoder]

ok
thanks for the reply

You're welcome.

PS. please try to bottom-post (as I have done) rather than top-post. It makes it easier to follow.