javascript - 我不知道错误出在哪里了

Question

我不知道错误出在哪里了。它首先说我有一个意外的标识符，然后我有一个不匹配的}，现在我有一个非法的返回语句。我只需要一些帮助。谢谢。

var userChoice = prompt("Do you choose rock, paper or scissors?");
var computerChoice = Math.random();
if (computerChoice < 0.34) {
    computerChoice = "rock";
} else if (computerChoice <= 0.67) {
computerChoice = "paper";
} else {
    computerChoice = "scissors";
}
console.log("Computer: " + computerChoice);
var compare = function(choice1, choice2) {
    if (choice1 === choice2) {
        return "The result is a tie!";

    } else if (choice1 === "rock") {
        if (choice2 === "scissors") {
            return "rock wins";
        } else {
            return "paper wins";
        }
        if (choice2 === "rock") {
            return "paper wins";
        } else {
            return "scissors wins";
        } else if (choice1 === "paper") {
            if (choice2 === "rock") {
                return "paper wins";
            } else {
                return "scissors wins";
            }
        }

Answer 1

    var userChoice = prompt("Do you choose rock, paper or scissors?");
var computerChoice = Math.random();
if (computerChoice < 0.34) {
    computerChoice = "rock";
} else if (computerChoice <= 0.67) {
    computerChoice = "paper";
} else {
    computerChoice = "scissors";
}
console.log("Computer: " + computerChoice);
var compare = function (choice1, choice2) {
    if (choice1 === choice2) {
        return "The result is a tie!";
    } else if (choice1 === "rock") {
        if (choice2 === "scissors") {
            return "rock wins";
        } else {
            return "paper wins";
        }
        if (choice2 === "rock") {
            return "paper wins";
        } else if (choice1 === "paper") {
            if (choice2 === "rock") {
                return "paper wins";
            } else {
                return "scissors wins";
            }
        }
    }
}

正确缩进的代码可以帮助找到丢失的大括号。当某个东西缩进 4 次时，就该看看是否可以重构了。

例如:

第一个 if 有返回值。之后没有理由有“否则如果”。这将消除一个缩进。 ("choice2 === "rock") 也是如此。相信当写入返回时，它实际上会返回。