一个switch循环说是SyntaxError: Unexpected token {

2013-04-30 01:12:58 1k 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

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nineteen73

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nineteen73 2013-05-01

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[quote=引用 12 楼 ftiger 的回复:] 我的代码通过了，要返回值，而不是打印到控制台


var getReview = function (movie) {
     
    switch(movie){
        case "Matrix":　//case语法错误　而且字符串要用引号括起来。
            return"good trip out";
         
        case "Princess Bride":
            return"awesome date night movie";
         
        case "Welcome to America":
            return"Amjad's favorite";
         
        case "Remember the Titans":
            return"love the sports";
         
        case "Why do I look like I'm 12?":
           return"The Ryan and Zach story";
         
         
        case "Fighting Kangaroos in the wild":
            return "Token Australian movie for Leng";
             
        //fault //这里是不是拼写错误？
        default :
        return"I don't know!";    
    }
 };
    getReview("Matrix");

Way to go! 通过了，谢谢你哈

KK3K2005 2013-05-01

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if(movie in movies){ return movies[movie]; } return "I don't know!" －－－－－》 return movies[movie] || "I don't know!"; 另一个方法更简洁的原因是 switch 可以抽象成一个map映射（配置重构）

ftiger 2013-04-30

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我的代码通过了，要返回值，而不是打印到控制台


var getReview = function (movie) {
     
    switch(movie){
        case "Matrix":　//case语法错误　而且字符串要用引号括起来。
            return"good trip out";
         
        case "Princess Bride":
            return"awesome date night movie";
         
        case "Welcome to America":
            return"Amjad's favorite";
         
        case "Remember the Titans":
            return"love the sports";
         
        case "Why do I look like I'm 12?":
           return"The Ryan and Zach story";
         
         
        case "Fighting Kangaroos in the wild":
            return "Token Australian movie for Leng";
             
        //fault //这里是不是拼写错误？
        default :
        return"I don't know!";    
    }
 };
    getReview("Matrix");

Way to go! 另，另一个方法没通过，但这代码明显更精减。


var getReview = function (movie) {
    var movies= {
        "Matrix":"good trip out",
        "Princess Bride" : "awesome date night movie",
        "Welcome to America" : "Amjad's favorite",
        "Remember the Titans" : "love the sports",
        "Why do I look like I'm 12?" : "The Ryan and Zach story",
        "Fighting Kangaroos in the wild" : "Token Australian movie for Leng"
    }
    
    if(movie in movies){
        return movies[movie];
    }
    return "I don't know!"
};
    getReview("Matrix");

Oops, try again! Better use a switch statement

nineteen73 2013-04-30

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引用 10 楼 ftiger 的回复:

你这个是什么运行环境？

codecademy http://www.codecademy.com/zh/courses/spencer-sandbox/0/4?curriculum_id=506324b3a7dffd00020bf661#

ftiger 2013-04-30

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你这个是什么运行环境？

nineteen73 2013-04-30

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引用 5 楼 zsx841021 的回复:

var getReview = function (movie) {

    

    switch(movie){

        case "Matrix":

            console.log("good trip out");

       break;

        case "Princess Bride":

            console.log("awesome date night movie");

       break;

        case "Welcome to America":

            console.log("Amjad's favorite");

       break;    

        case "Remember the Titans":

            console.log("love the sports");

        break;

        case "Why do I look like I'm 12?":

           console.log("The Ryan and Zach story");

        break;  

        case"Fighting Kangaroos in the wild":

            console.log("Token Australian movie for Leng");

        break;

        default:

        console.log("I don't know!");    

       }

    };

    getReview("Fighting Kangaroos in the wild");

完全复制了，然后还是

nineteen73 2013-04-30

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输入：

输出：

报错：

ftiger 2013-04-30

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case'Why do I look like I\'m 12?': //注意要转义

三石-gary 2013-04-30

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双引号里面用单引号。。如果单引号里面用单引号需要转义

三石-gary 2013-04-30

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var getReview = function (movie) {
    
    switch(movie){
        case "Matrix":
            console.log("good trip out");
       break;
        case "Princess Bride":
            console.log("awesome date night movie");
       break;
        case "Welcome to America":
            console.log("Amjad's favorite");
       break;    
        case "Remember the Titans":
            console.log("love the sports");
        break;
        case "Why do I look like I'm 12?":
           console.log("The Ryan and Zach story");
        break;  
        case"Fighting Kangaroos in the wild":
            console.log("Token Australian movie for Leng");
        break;
        default:
        console.log("I don't know!");    
       }
    };
    getReview("Fighting Kangaroos in the wild");

三石-gary 2013-04-30

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报什么错。。。

nineteen73 2013-04-30

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这是改过之后的，但还是有错

var getReview = function (movie) { switch(movie){ case'Matrix': console.log("good trip out"); break; case'Princess Bride': console.log("awesome date night movie"); break; case'Welcome to America': console.log("Amjad's favorite"); break; case'Remember the Titans': console.log("love the sports"); break; case'Why do I look like I'm 12?': console.log("The Ryan and Zach story"); break; case'Fighting Kangaroos in the wild': console.log("Token Australian movie for Leng"); break; default: console.log("I don't know!"); } }; .getReview("Fighting Kangaroos in the wild");

三石-gary 2013-04-30

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CASE 后面该加break的时候还是应该加上

ftiger 2013-04-30

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var getReview = function (movie) {
    
    switch(movie){
        case "Matrix":　//case语法错误　而且字符串要用引号括起来。
            return"good trip out";
        
        case "Princess Bride":
            return"awesome date night movie";
        
        case "Welcome to America":
            return"Amjad's favorite";
        
        case "Remember the Titans":
            return"love the sports";
        
        case "Why do I look like":
           return"The Ryan and Zach story";
        
        
        case "Fighting Kangaroos in the wild":
            return "Token Australian movie for Leng";
            
        //fault //这里是不是拼写错误？
        default :
        return"I don't know!";    
    }
 };

一个switch循环 说是SyntaxError: Unexpected token {

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一个switch循环说是SyntaxError: Unexpected token {