语法错误：意外的令牌Else

Question

我正在通过Codecademy学习Javascript，并没有在这里得到这个小小的东西。

我应该写一个if else语句。

它在下面向我展示了一个缺少标识符的Syntac错误：

var userAnswer = prompt("Are you feeling lucky, punk?");

if (userAnswer === "yes");
{

    console.log("Batman hits you very hard. It's Batman and you're you! Of course Batman wins!");
}

 else {

    console.log("You did not say yes to feeling lucky. Good choice! You are a winner in the game of not getting beaten up by Batman.");
}

这有什么问题......这个例子中没有错误：

if (age < 18)

{

    console.log("We take no actions or responsibility. Play at your own risk!");
}

else

{

    console.log("Enjoy the game");
}

Answer 1

if (userAnswer === "yes");

删除分号。

Answer 2

第一次条件检查后有一个分号。此外，您应始终将条件分支的左括号放在与括号

相同的行上

Answer 3

var age;
age = prompt('How old are you?');
if (age < 18)

{

alert("We take no actions or responsibility. Play at your own risk!");
}

else if(age > 18)

{

alert("Enjoy the game");
}