JavaScript 切换函数

Question

我正在尝试运行此代码，但它给我一个错误，提示“输入意外结束”。你愿意帮忙吗？提前致谢。

var getReview = function (movie) {
switch (movie) {
case "Toy Story 2":
    return "Great story. Mean prospector.";
    break;
case "Finding Nemo" :
    return "Cool animation, and funny turtles.";
    break;
case "The Lion King" :
    return "Great songs.";
    break;
default : 
    return "I dont know!"; 
    break;
};

Answer 1

您的函数似乎缺少右大括号:

var getReview = function (movie) {
    switch (movie) {
    case "Toy Story 2":
        return "Great story. Mean prospector.";
        break;
    case "Finding Nemo" :
        return "Cool animation, and funny turtles.";
        break;
    case "The Lion King" :
        return "Great songs.";
        break;
    default : 
        return "I dont know!"; 
        break;
    };
};  // <-- here

另请注意，在 return 后添加 break 或在 switch block 末尾添加分号是没有意义的。您可以将上面的内容简化为:

var getReview = function (movie) {
    switch (movie) {
    case "Toy Story 2":
        return "Great story. Mean prospector.";
    case "Finding Nemo" :
        return "Cool animation, and funny turtles.";
    case "The Lion King" :
        return "Great songs.";
    default : 
        return "I dont know!"; 
    }
};