JavaScript 代码不工作，没有错误或停止

Question

我是 JavaScript 的新手，我尝试编写凯撒密码的解码器。但是我的代码不起作用，没有显示任何错误，也没有停止。

let word = "привет";
let shift = 3;
let result = "";
for (let i = 0; i < word.legth; i++){
    if ('А'.charCodeAt(0) <= word[i].charCodeAt(0) <= 'Я'.charCodeAt(0)) {
        let char = ((word[i].charCodeAt(0) + shift - 'А'.charCodeAt(0)) % 32) + 'А'.charCodeAt(0)
        result = result + String.fromCharCode(char);
    }
    else if ('а'.charCodeAt(0) <= word[i].charCodeAt(0) <= 'я'.charCodeAt(0)) {
        let char = ((word[i].charCodeAt(0) + shift - 'а'.charCodeAt(0)) % 32) + 'а'.charCodeAt(0)
        result = result + String.fromCharCode(char);
    }
    else {
        result = result + word[i];
    }
}
console.log(result)

Answer 1

将word.legth更改为word.length

let word = 'привет';
let shift = 3;
let result = '';
for (let i = 0; i < word.length; i++) {
    if ('А'.charCodeAt(0) <= word[i].charCodeAt(0) <= 'Я'.charCodeAt(0)) {
        let char =
            ((word[i].charCodeAt(0) + shift - 'А'.charCodeAt(0)) % 32) +
            'А'.charCodeAt(0);
        result = result + String.fromCharCode(char);
    } else if (
        'а'.charCodeAt(0) <=
        word[i].charCodeAt(0) <=
        'я'.charCodeAt(0)
    ) {
        let char =
            ((word[i].charCodeAt(0) + shift - 'а'.charCodeAt(0)) % 32) +
            'а'.charCodeAt(0);
        result = result + String.fromCharCode(char);
    } else {
        result = result + word[i];
    }
}
console.log(result);

JavaScript 代码不工作，没有错误或停止

JavaScript code doesn't work, no errors or stops

javascript