What do multiple arrow functions mean in JavaScript?

In JavaScript, multiple arrow functions, also known as nested arrow functions, refer to the situation where one arrow function is defined within another arrow function. This is a concept related to closures and lexical scoping in JavaScript.

Here’s an example of multiple arrow functions:

const outerFunction = () => {
  const innerFunction = () => {
    console.log('Inside inner function');
  };

  console.log('Inside outer function');
  innerFunction();
};

outerFunction();

In this example, innerFunction is defined inside outerFunction. innerFunction is a nested arrow function, meaning it’s declared within the scope of outerFunction.

Multiple arrow functions can be used to encapsulate logic, create closures, and manage scope. The inner arrow function has access to variables declared in the outer arrow function due to lexical scoping rules. This allows for powerful and flexible patterns in JavaScript programming.

However, it’s important to be mindful of readability and complexity when using nested arrow functions. Excessive nesting can make code harder to understand and maintain.