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: ...

JavaScript secret No. 2: Higher-order functions In functional programming ... such as in a click handler or setTimeout. For example: Person.getName(); // ‘this’ points to Person setTimeout ...

Higher-order functions take other functions as arguments or return functions as results. For example: In functional programming ... no in the world of functional programming. The following JavaScript ...