Javascript 猜号游戏

Question

我似乎无法让这段代码在找到正确答案时提醒用户，也无法让弹出窗口继续循环播放。我将其编码为学习练习。在 JS 中，我非常菜鸟。

有人可以审查我的代码并提供建设性的批评吗？

// noprotect

var targetNumber = Math.floor(Math.random() * 100 + 1);

var userGuess = prompt("Pick a number from 1 to 100 to guess which one I'm  thinking about!" + " (6 guesses left.)");


for (var i=5; i>0; i--) {

if (i === 0) {
    prompt("Out of guesses!" + " (" + i + " guesses left.)" + " My number was: " + targetNumber);

}

if (isNaN(userGuess) === true) {
    userGuess = prompt("That value was not a number! Please pick a number from 1 to 100 to guess which one I'm thinking about!" + " (" + i + " guesses left.)");
}

if (userGuess < 1 || userGuess > 100) {
    userGuess = prompt("That number was not between 1 and 100 inclusive! Please pick a number from 1 to 100 to guess which one I'm thinking about!" + " (" + i + " guesses left.)");
}

if (userGuess === targetNumber) {
    userGuess = alert("You're correct! My number was: " + targetNumber);
}

if (userGuess < targetNumber) {
    userGuess = prompt("You're too low, guess again" + " (" + i + " guesses left.)");
}

if (userGuess > targetNumber) {

    userGuess = prompt("You're too high, guess again!" + " (" + i + " guesses left.)");
}

}

Answer 1

您正在将字符串值 prompt() returns 与使用 === 的数字进行比较。那是行不通的。

改为：

var userGuess = parseInt(prompt(...))

值得注意的是，prompt 是一种极其笨拙的方法。更好的做法是创建一个表单，其中包含适当的 <input> 字段和放置回复的位置。

Answer 2

只是想在我下班回家之前添加一个简短的注释。您的 for 循环将永远不允许 i === 0 条件通过，因为循环仅在 i > 0 时继续。您可能希望将其更改为 i >= 0 或在循环内调整您的条件。

Javascript 猜号游戏

Javascript number guessing game

javascript

numbers