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Declares a variable, optionally initializing it to a value.
Syntax
var varname [= value] [..., varname [= value] ]
Parameters
| Parameter | Description |
|---|---|
| varname | Variable name. It can be any legal identifier. |
| value | Initial value of the variable and can be any legal expression. |
Description
The scope of a variable is the current function or, for variables declared outside a function, the current application.
Using var outside a function is optional; you can declare a variable by simply assigning it a value. However, it is good style to use var, and it is necessary in functions in the following situations:
If a global variable of the same name exists.
If recursive or multiple functions use variables with the same name.