JavaScript开关函数

Question

我想让这段代码运行，但它给了我一个错误，说“意外的输入结束”。你能帮忙吗？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

这样看来，你错过了你的函数在大括号：

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 

另外请注意，它是没有意义有break在年底return或分号后一个switch块。你可以将上面的内容减少为：

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!"; 
    } 
};