Return statement

Control flow is a form of changing how and which statement will be Executed by the Interpreter.

Return statement can stop the Evaluation process imedietly. Let start with a example, run two command bellow simultaneously

let x = 1;
let y = 2;
return x + y;
let x = 3;
let x = 4;

return x;

Here we can see the first command have return x + y; statement in beetween a set command. Causing the Interpreter to stop the Evaluation process and return value 3. Nullify (or skipping) both let function after that, cause x value remain 1.

The next command show the value of x, which is 1. Telling us the Return statement working exactly in expected behavior.

Syntax

Return statement start with return keyword, and following by an Expression statement

Expression statements: Everything expect a Return statement or a Let statement is a Expression statement

return 2;

Example

Return in a Function

let add = fn (x, y) { return x + y; };
return add(5, 4);

Return in a complex If expression

let add = fn (x, y) { return x + y; };

let y = if (6 > 3) {
    let x = 2;
    let y = 2;
    return add(x, y);
};

return y;