面试题：TypeScript中枚举的基本使用

Question

在TypeScript中，定义一个名为`Direction`的枚举，包含`North`、`South`、`East`、`West`四个方向，然后编写一个函数`printDirection`，接受一个`Direction`类型的参数，并在控制台打印出对应的方向字符串。

Answer 1

enum Direction {
    North,
    South,
    East,
    West
}

function printDirection(direction: Direction) {
    switch (direction) {
        case Direction.North:
            console.log('North');
            break;
        case Direction.South:
            console.log('South');
            break;
        case Direction.East:
            console.log('East');
            break;
        case Direction.West:
            console.log('West');
            break;
    }
}