Question

在谈到这个问题之前，我只想说一件事。我是一个对编程感兴趣的年轻人，所以如果答案非常简单，请不要愤怒。 PS。抱歉我的英语不好：P

这就是事情。我试图用JavaScript在Fahrenheit和Celsius之间制作这个转换器。我只是无法得到我enter code here做错的事。我的代码;

//Line 2 asks the user what he/she want to convert. Either celcius to farenheit, or farenheit to celcius
var userChoice = prompt("For converting farenheit to celcius, type FtoC. For converting celcius to farenheit, type CtoF");


//Defines a function to calculate the math
var celciustofarenheit = function (userChoice) {
    if (userChoice === "CtoF")
        var CtoFchoice = prompt("Whats the degree you want to convert?")
            var result1 = CtoFchoice * 9 / 5 + 32;
                console.log(CtoFchoice, "is", result1, "in farenheit!")
}
    if (userChoice === "FtoC") {
        var FtoCchoice = prompt("Whats the number you want to convert?")
            var result2 = FtoCchoice - 32 * 5 / 9;
                console.log(FtoCchoice, "is", result2, "in celcius!")
    }
};

请告诉我我做错了什么，而不是只是粘贴正确的代码！：）

Answer 1

if (userChoice === "CtoF")后你缺少大括号。如果你只是正确地缩进代码，你会直接发现这样的错误。

Answer 2

更正代码

//Defines a function to calculate the math
var celciustofarenheit = function (userChoice) {
    if (userChoice === "CtoF") {
        var CtoFchoice = prompt("Whats the degree you want to convert?");
        var result1 = CtoFchoice * 9 / 5 + 32;
        console.log(CtoFchoice, "is", result1, "in farenheit!");
    }

    if (userChoice === "FtoC") {
        var FtoCchoice = prompt("Whats the number you want to convert?");
        var result2 = FtoCchoice - 32 * 5 / 9;
        console.log(FtoCchoice, "is", result2, "in celcius!");
    }
};

意外的标记 }。 Celcius到Farenheit转换器

2 个答案: