what's var?

[gpopguru]

This may sound stupid, but what is the difference between these two scripts?
var x = 5
alert(x)

and

x = 5
alert(x)

they'll do the same thing, so when would I ever have to use "var?" :confused:

[Bobo]

When there is no , it is "universal" meaning it can be accessed from another script. If it has [I]var, then it only works for the script you are in, so you can use the same variable label in different ways.

[Choopernickel]

Worthy of note: with Mozilla's script engine in Strict mode, declaring a variable without var in any scope (not as a property of an object, mind) will throw a "Warning."

[Roy Sinclair]

Here's another thread on this same subject: http://www.codingforums.com/showthread.php?t=21356

[gpopguru]

Ooh! thanks! I didn't know that Lol.