argument vs parameter

Written byPhuoc Nguyen

#Difference

A parameter is the variable belonging to the declaration of a function.

An argument is the actual value of the parameter that is passed to the function.

Assume that we have a function that calculates the sum of two numbers:

const sum = function (a, b) {
    return a + b;
};

here `a` and `b` are the parameters. If we call the function, `sum(1, 2)`, then `1` and `2` are the arguments.

#Tip

There is a handy memory hook to distinguish these terms:

Parameter → Placeholder

Argument → Actual value

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Phước Nguyễn

argument vs parameter

#Difference

#Tip

Questions? 🙋

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