jsp- how to assign input value into another variable I would like to use later?

the problem is

when I say:

alert(parseInt(document.frmFuture.txtDays.value) + 7);

(value is number that user input) it shows fine.

but when I say:

var tmp = document.frmFuture.txtDays.value;
alert(tmp + 7);

it gives me undefined.

Actually, I want to do some cals later using the input number. But it looks like impossible? how can i do that?


You forgot the parseInt.

var tmp = parseInt(document.frmFuture.txtDays.value);
alert(tmp + 7);

Now it should work.

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