HTML5 APPLICATIONS DEVELOPMENT MANUAL

If the function was invoked from a statement, JavaScript will "return"

to execute the code after the invoking statement.

Functions often compute a return value. The return value is

"returned" back to the "caller":

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JavaScript Functions

This example calls a function which performs a calculation and returns the result:

Variables

Scripts should temporarily store pieces of information. These bits of

data can be stored as variables.

It’s called a variable because its values can vary every time a program

is run. Variables can be defined using the var syntax with a unique keyword,

such as height or width.

JavaScript Functions