A function is a named group of statements. JavaScript functions are declared with the function keyword followed by the function name and parameter list in parentheses (). For this box, you're going to ...

A function is a separate part of the program that performs a particular task. The code of the function can be reused by calling the same function wherever it is ...

For example, using closures along with higher-order functions used to be the only way we could have “private” or tamper-proof variables in JavaScript: ...

including JavaScript, a functional programmer has unique considerations to approach and use functions. This tutorial explains what is different and special about a functional programmer's approach, ...