Question

我正在编写关于if / else语句的Codecademy课程，并且我反复收到错误说，＆＃34;语法错误：意外的令牌＆＃34;。请帮忙。这是代码：

// Check if the user is ready to play!

confirm("I am ready to play!");

var age=prompt("What is your age?");

if(age<13)
{
    console.log("You are allowed to play, but I take no responsibility");
}else{
    confirm("Play On!");
}

console.log("You are at a Justin Bieber concert, and you hear this lyric 'Lace my shoes off, start racing.'");

console.log("Suddenly, Bieber stops and says, 'Who wants to race me?'");

var userAnswer=prompt("Do you want to race Bieber on stage?");

if(userAnswer==="yes");
{
    console.log("You and Bieber start racing. It's neck and neck! You win by a shoelace!");
}else{
    console.log("Oh no! Bieber shakes his head and sings 'I set a pace, so I can race without pacing.'");
};

Answer 1

if(userAnswer==="yes");

只需删除＆＃34;;＆＃34;

if(userAnswer==="yes")

这就是为什么 - JavaScript（以及大多数语言）会解释如下：

if (condition); 
    statement;

作为无操作并优化它，因为上面的伪代码实际意味着：

if (condition) <nothing!>; 
    statement;

＆＃34;意外的令牌＆＃34;错误

1 个答案: