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Function Expression

Defining functions as expressions.

Function Expression

A JavaScript function can also be defined using an expression.

A function expression can be stored in a variable:

const x = function (a, b) {return a * b};

After a function expression has been stored in a variable, the variable can be used as a function.

Example

const x = function(a, b) { return a * b };
let z = x(4, 3);