Which word is used to define a function in JavaScript?

In JavaScript, the keyword "function" is utilized to define a function. This is a fundamental aspect of the JavaScript language, which allows developers to create reusable blocks of code that can perform specific tasks when invoked. The structure to define a function includes the keyword followed by the function name, parentheses (which can include parameters), and a set of curly braces that enclose the code to be executed.

Using "function" is crucial because it explicitly tells the JavaScript interpreter that you are defining a new function, establishing a clear and standard way for programmers to organize and invoke code. This keyword is a core component of JavaScript syntax and is essential for building modular and maintainable code.