Parameter
For example:
js
function
example
(
parameter
)
{
console.
log
(
parameter)
;
// Output = foo
}
const
argument =
"foo"
;
example
(
argument)
;
There are two kinds of parameters:
- input parameters
-
the most common kind; they pass values into functions. Depending on the programming language, input parameters can be passed in several ways (e.g., call-by-value, call-by-address, call-by-reference).
- output/return parameters
-
primarily return multiple values from a function, but are not recommended since they cause confusion
Parameters versus arguments
Note the difference between parameters and arguments :
- Function parameters are the names listed in the function's definition.
- Function arguments are the real values passed to the function.
- Parameters are initialized to the values of the arguments supplied.