undefined

[SpaceMan++]

When I was browsing a Web template site, I found a funny bug: The buttons are all undefined.
undefined is a data type in ECMAScript where the variable is not defined or does not exist, the following code makes variable x undefined:

var a = new Object(); //variable a is now an object
a.b = 12; //a has b now, it's 12
var x = a.d; //a doesn't have property d, so it's undefined.

In that Flash template, the developer didn't set a databinding source so it's undefined.
Also, NaN stands for Not a Number

Type the following code to the browser produces NaN:

javascript:alert(0 / 0)

This one is NaN:

Normally, it should bind a number data, however, the data source is broken so NaN is produced.

Let's find more screenshots of NaN and undefined.

[Cat333Pokémon]

Undefined, not-a-number, name output, and general errors are some of my favorite types, especially when it's on a professional program in beta stage--or even better, the finished product!

And

javascript:alert(1 / 0)

gave me "Infinity" in IE.

[SpaceMan++]

That is the punishment for making a Web template that is very inaccessible.

javascript: alert(0 / 0)

produces NaN.
Also, parseInt a value that contains no number will produce NaN.

Even YouTube has undefined error
http://www.dslreports.com/speak/slidesh ... VC1EU0w%3D

[Cat333Pokémon]

Heh, I've seen that "undefined" on YouTube when uploading videos before. And the new code does produce "NaN".

[isbragg]

The Buizel.Net Jukebox has NaN. Refresh any page while the Jukebox is open.

[Cat333Pokémon]

Originally Posted by isbragg

The Buizel.Net Jukebox has NaN. Refresh any page while the Jukebox is open.
[attachment=0:3qrngvwg]buizelnetNaN.bmp[/attachment:3qrngvwg]

I still need to find out why only four songs appear on the list. I uploaded 10 in the folder (following standard naming conventions for Internet), but only 4 appeared.