Javascript嵌套开关语句

Question

我是Javascript的新手，我正在学习有关开关语句的知识。我的代码试图运行两层的开关语句和验证数据。我想要的输出是让用户输入一个“是”或“否”，如果选择了“是”，那么它将通过开关语句，但是如果选择了“是”以外的任何内容，那么它将输出“太差了！”到控制台去。我有编译器错误，我不知道如何解决这个问题，因为我不完全理解javascript语法。

var user = prompt("Welcome to learning about exceptions with me, A-rod. 
In this tutorial we will be learning about exceptions and what not 
to do with them. Let's get started, shall we? ").toUpperCase(); 

switch(user){
    case 'YES'
     var user_1 = prompt("What's your name?"); 
     switch(user_1) {
        case 'Buster':
            console.log("Hey, brother!");
            break;
        case 'Alex':
            console.log("I've made a huge mistake.");
            break;
        case 'Steve':
            console.log("Steve Holt!");
            break;
     default:
         console.log("I don't know you!");}
break; 
default:
    console.log("too bad!"); 
 }

错误是

“期待”：‘而不是’变量‘“

和

“期待‘(结束)’而不是‘默认’”

Answer 1

您在第一个开关语句中缺少了一个分号：

​

var user = prompt("Welcome to learning about exceptions with me, A-rod. In this tutorial we will be learning about exceptions and what not to do with them. Let's get started, shall we? ").toUpperCase(); 

switch(user){
    case 'YES':
     var user_1 = prompt("What's your name?"); 
     switch(user_1) {
        case 'Buster':
            console.log("Hey, brother!");
            break;
        case 'Alex':
            console.log("I've made a huge mistake.");
            break;
        case 'Steve':
            console.log("Steve Holt!");
            break;
     default:
         console.log("I don't know you!");}
break; 
default:
    console.log("too bad!"); 
 }

​

Answer 2

var user = prompt("Welcome to learning about exceptions with me, A-rod." + 
"In this tutorial we will be learning about exceptions and what not" +  
"to do with them. Let's get started, shall we? ").toUpperCase(); 

switch(user){
    case 'YES':
     var user_1 = prompt("What's your name?"); 
     switch(user_1) {
        case 'Buster':
            console.log("Hey, brother!");
            break;
        case 'Alex':
            console.log("I've made a huge mistake.");
            break;
        case 'Steve':
            console.log("Steve Holt!");
            break;
     default:
         console.log("I don't know you!");
         break;
     }
break;
default:
    console.log("too bad!"); 
    break;
 }