將數字翻譯成法語或德語的java腳本代碼-有解無憂

我需要撰寫一個翻譯代碼，只將數字翻譯成法語和德語。我已經為法語、數字、德語數字創建了陣列，并使用布爾運算式定義了我的數字范圍：number=>1 &&<=30。我需要在函式 translate 中撰寫代碼

這是我嘗試的代碼

    function translate(number,lang)
    {var number= prompt ("Enter text to translate?");
    undefined
    if (number <1 && number > 30) {
    alert("Please enter a number between 1 and 30");

    var number= prompt ("Please enter an integer btween 1 and 30");
    if (number >30) {
        alert("Please enter a number between 1 and 30");
        var number= prompt ("Which number between 1 and 30 do you want to 
    translate?");
    
    }
    }
    undefined
    if (number <= 1 && number <= 30) 
    var lang= prompt ("Please enter translation language, French or 
    German?");

    if (lang==french & lang ==german);{var french = ["Zéro", "Un", "Deux", 
    "Trois", "Quatre", "Cinq", "Six", "Sept", "Huit", "Neuf", "Dix", "Onze", 
    "Douze", "Treize", "Quatorze",
    "Quinze", "Sieze", "Dix-sept", "Dix-huit", "Dix-neuf", "Vingt", "Vingt 
    Et Un", "Vingt-deux", "Vingt-trois", "Vingt-quatre", "Vingt-cinq", 
    "Vingt-six", "Vingt-sept", "Vingt-huit", "Vingt-neuf", "Trente"];

    var german = ["Null", "Eins", "Zwei", "Drei", "Vier", "Fünf", "Sechs", 
    "Sieben", "Acht", "Neun", "Zehn", "Elf", "Zw?lf", "Dreizehn", 
    "Vierzehn", "Fünfzehn", 
    "Sechzehn", "Siebzehn", "Achtzehn", "Neunzehn", "Zwanzig", 
    "Einundzwanzig", "Zweiundzwanzig", "Dreiundzwanzig", "Vierundzwanzig", 
    "Fünfundzwanzig", 
    "Sechsundzwanzig", "Siebenundzwanzig", "Achtundzwanzig", 
    "Neunundzwanzig", "Dreiβig"];
    break;
    }
    }   

   {prompt ("only French and German allowed")
     return lang === "French" ? french[number] : german[number]}

這是我試圖在上面編碼的說明

該軟體將轉換為法語或德語的 1 到 30 之間的整數。程式應該問：

要翻譯的數字 ? 用戶應鍵入數字 ? 如果用戶不鍵入數字，則必須顯示以下訊息“請使用數字”并且程式必須結束 ? 如果用戶未鍵入 1 到 30 之間的數字, 必須顯示以下訊息“請輸入 1 到 30 之間的整數”，程式必須結束
輸出語言是什么 ? 用戶應該輸入德語或法語 ? 如果用戶不輸入德語或法語，則必須顯示以下訊息“只允許法語或德語”，程式必須結束

uj5u.com熱心網友回復：

我讀了你的代碼，我想我發現了一些錯誤......首先，@connexo 在評論中提到，你的 if 中的第二個條件是無用的：

if (number <= 1 && number <= 30)

如果一個數字已經小于或等于 1，則它始終小于 30。

我認為您想要做的是檢查數字是否在 1 到 30 之間，因此正確的條件集是：

if (number >= 1 && number <= 30)

其次，您lang在函式引數中定義了一個變數，然后在函式體中定義了另一個同名變數。對變數名稱更加小心，并嘗試為變數使用唯一值。無論如何，我也無法獲得您代碼的這一部分：

if (lang==french & lang ==german);

所以lang應該是french和german？什么是型別lang？如果它的型別是 string 你應該使用""or ''。而且我也沒有;在 if 的末尾得到。

第一個 if 也是不正確的，如果你想檢查一個數字是否在數字之間，你應該使用||運算子 not&&因為一個數字不可能同時小于 1 和大于 30。

if (number <1 || number > 30)

因此，我查看了您的代碼并對其進行了一些改進并對其進行了檢查以使其功能齊全并完成作業，但是您必須找到一種方法在您的應用程式中實作它

  var french = ["Zéro", "Un", "Deux",
    "Trois", "Quatre", "Cinq", "Six", "Sept", "Huit", "Neuf", "Dix", "Onze",
    "Douze", "Treize", "Quatorze",
    "Quinze", "Sieze", "Dix-sept", "Dix-huit", "Dix-neuf", "Vingt", "Vingt Et Un", "Vingt - deux", 
    "Vingt - trois", "Vingt - quatre", "Vingt - cinq",
    "Vingt-six", "Vingt-sept", "Vingt-huit", "Vingt-neuf", "Trente"
  ];

  var german = ["Null", "Eins", "Zwei", "Drei", "Vier", "Fünf", "Sechs",
    "Sieben", "Acht", "Neun", "Zehn", "Elf", "Zw?lf", "Dreizehn",
    "Vierzehn", "Fünfzehn",
    "Sechzehn", "Siebzehn", "Achtzehn", "Neunzehn", "Zwanzig",
    "Einundzwanzig", "Zweiundzwanzig", "Dreiundzwanzig", "Vierundzwanzig",
    "Fünfundzwanzig",
    "Sechsundzwanzig", "Siebenundzwanzig", "Achtundzwanzig",
    "Neunundzwanzig", "Dreiβig"
  ];

  var number = parseInt(prompt("Enter number to translate?"));

  while (number < 0 || number > 30) {
    alert("Please enter a number between 1 and 30");
    number = prompt("Please enter an integer between 1 and 30");
  }

  var lang = prompt("Please enter translation language, French or German ? ");

  while(lang != "french" && lang != "german")
  {
    alert("Please enter a valid language (french or german)");
    lang = prompt("Please enter translation language, French or German ? ");
  }

var word =  lang === "french" ? french[number] : german[number];
alert("the number "   number  " in "   lang " is "  word);

要記住的幾件事：

翻譯應用程式等的好習慣是在應用程式執行之前宣告字典
始終確保您正在比較正確的資料型別，例如提示函式回傳一個字串，但您將其視為數字。（最好在比較之前檢查型別并將它們相互轉換，即使語言自動處理這些事情）
我發現字典從零開始，所以我用 0 替換了 1
在宣告函式引數時，請問問自己它們打算做什么或持有什么。在這里你定義了兩個引數并在你的函式中再次宣告它們......這不好。如果您的翻譯函式只負責翻譯，您應該在呼叫此函式之前驗證資料，然后將它們傳遞給翻譯函式。
為了驗證資料，我們通常使用 while 回圈......這樣我們就可以確保只要用戶輸入了不正確的資料，我們就不會繼續執行代碼的其他部分，這正是我們想要的

uj5u.com熱心網友回復：

使用i18n帶有鍵german和french查找的物件。在函式之外定義它，不需要在每次函式運行時重新宣告它。

使用while回圈來確保用戶輸入您需要的內容。

然后，您可以像這樣進行查找：

i18n[lang][number]

const i18n = {
  french: ["Zéro", "Un", "Deux", "Trois", "Quatre", "Cinq", "Six", "Sept", "Huit", "Neuf", "Dix", "Onze", "Douze", "Treize", "Quatorze", "Quinze", "Sieze", "Dix-sept", "Dix-huit", "Dix-neuf", "Vingt", "Vingt Et Un ", "Vingt - deux ", "Vingt-trois ", "Vingt-quatre ", "Vingt-cinq ", "Vingt-six", "Vingt-sept", "Vingt-huit", "Vingt-neuf", "Trente"],
  german: ["Null", "Eins", "Zwei", "Drei", "Vier", "Fünf", "Sechs", "Sieben", "Acht", "Neun", "Zehn", "Elf", "Zw?lf", "Dreizehn", "Vierzehn", "Fünfzehn", "Sechzehn", "Siebzehn", "Achtzehn", "Neunzehn", "Zwanzig", "Einundzwanzig", "Zweiundzwanzig", "Dreiundzwanzig", "Vierundzwanzig", "Fünfundzwanzig", "Sechsundzwanzig", "Siebenundzwanzig", "Achtundzwanzig", "Neunundzwanzig", "Dreiβig"]
};

function translate(number, lang) {
  while (isNaN(number) || number < 0 || number > 30) { // keep asking while the user doesnt enter a valid number
    number = Number(prompt("Please enter a number from 0 to 30")); // What a user enters is always a string so we cast to Number
  }
  lang = typeof lang === 'string' ? lang.toLowerCase() : lang; // make sure we can disregard case in function argument
  while (lang !== 'french' && lang !== 'german') {
    lang = prompt("Please enter translation language, French or German?").toLowerCase(); // we want the user to enter the language without having to conform to case;
  }

  console.log(`The translation of ${number} to ${lang} is: ${i18n[lang][number]}`);
}

translate(5, 'German');
translate(29, 'freNch');
translate();

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標籤：javascript

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