Javascript:在函数中全球化变量

Javascript: Globalizing variables inside function

本文关键字：全球化 变量 函数 Javascript      更新时间：2023-09-26

所以我有以下代码：

var func1 = function() {
    var userChoose = prompt("Choose a number from 1-10. If you choose the same number as the computer, you win!");
    func2();
};
var func2 = function() {
    computerChoose = Math.random();
    computerChoose = Math.round(computerChoose*10)/10;
    if (userChoose === computerChoose) {
        console.log("You won! The computer chose the number " + userChoice + " just like you! Good job!");
    } else if (userChoose > 10) {
        console.log("I'm sorry, you wrote something above 10. Try again.");
    } else {
        console.log("Sorry! The computer got " + computerChoose + 
        " and you got " + userChoose + ". Sorry!");
    }
};
func1();
我

遇到的问题是，一旦我放置一个数字，比如 5，它就会保留该数字，每次我运行代码时，它都会说"对不起！计算机得到x，你得到5."，即使我输入3。

如果我错了，请纠正我，但我相信发生这种情况是因为我正在尝试更改函数内的变量。我的主要问题是如何全球化函数中的变量，以便可以在不同的函数中使用和修改它？

谢谢。

可以在调用函数时传递值。试试这个：

var func1 = function() {
    var userChoose = prompt("Choose a number from 1-10. If you choose the same number as the computer, you win!");
    func2(userChoose);
};
var func2 = function(userChoose ) {
    computerChoose = Math.random();
    computerChoose = Math.round(computerChoose*10)/10;
    if (userChoose === computerChoose) {
        console.log("You won! The computer chose the number " + userChoice + " just like you! Good job!");
    } else if (userChoose > 10) {
        console.log("I'm sorry, you wrote something above 10. Try again.");
    } else {
        console.log("Sorry! The computer got " + computerChoose + 
        " and you got " + userChoose + ". Sorry!");
    }
};
func1();

在这里演示

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