Why use "var" to create variables 1

[firegambler]

Hi folks,

I am wondering why many of you use "var" to create a variable if it is possible to create variables by just using a name and giving it a value.

Could you please explain to me the advantage of using "var"?

Thanks in advance!

regards

 

[billwatson]

i use var when i want to restrict the scope of a variable

for(var i = 0)

means that i is only defined within the for loop and cant effect any other i outside the for loop

same with functions.....sometimes you only want a variable yo have a value within a function so you use var. sometimes you want a varaible to be available throughout the timeline in which you probably wouldnt use var

clear as mud?

 

[firegambler]

Yep! Clear as mud :-D
Thanks for the explanation!
Is there any other reason for using "var" too or is the only purpose to use it the restriction of the area of variable validity?

regards

 

[billwatson]

its just to restrict the availability...buts its good practise especially if you are writing fairly long and involved programs to restrict availabilty and avoid unforeseen knock on effects

 

[firegambler]

Thanks for your explanation, Bill!

regards

 

[wangbar]

It also helps the movie to run (very, very) marginally faster as the Player knows where to look for the variable value in advance.

Apparently.