‘Higher-order functions’ is a fancy term for functions that take other functions as arguments or that return functions. Very powerful! Last week, I casually dropped the term “higher-order function” ...

Higher-order functions let you treat functions like any other value — passing them around, returning them, and composing them for cleaner, more reusable code. They power everyday tools like map, ...

Interactive Web pages, long dreamed of by designers, are finally here—Web interfaces that respond instantly to user commands, with minimal page redraw. All this and more is possible via Ajax ...