Weird...

[buzzt]

For some reason every time I do this:

b=document.the_form.days.value;
x=(6 + b);
document.the_form.result.value=x;

Instead of getting a sum, it places the numbers beside each other(i.e. if b=1, I get 61).


If I do this:

b=document.the_form.days.value;
x=(6 * b);
document.the_form.result.value=x;

It works the way it should and multuplies the values. What's wrong here?

 

[vongrunt]

value is string, + is also string operator, javascript performs some implicit casting and result is a string. Use parseInt(b) or parseFloat(b).

 

[BillyRayPreachersSon]

Because JS is an untyped language, these things can happen. Use parseInt (or parseFloat) to "force" JS to think that "b" is a number:

x = 6 + parseInt(b, 10);

or the "cheats" version:

x = 6 + (b - 0);

Hope this helps,
Dan

 

[buzzt]

Great! Thanks!