Review: Function Returning a Value
Examples
Interrupt a function
A function immediately stops at the point where return
is called.
function counter() { // Infinite loop for (let count = 1; ; count++) { console.log(`${count}A`); // Until 5 if (count === 5) { return; } console.log(`${count}B`); // Until 4 } console.log(`${count}C`); // Never appears } counter(); // Logs: // 1A // 1B // 2A // 2B // 3A // 3B // 4A // 4B // 5A
Returning a function
See also the article about Closures.
function magic() { return function calc(x) { return x * 42; }; } const answer = magic(); answer(1337); // 56154