javascript - 通过 Chrome 扩展解码 URL

Question

我正在尝试为 Google Chrome 编写一个小扩展程序来解码网站上显示的编码 URL。我前段时间用Java写了核心方法，并尝试将其转换为JavaScript

function decodeURL(Encoded) {
var Length = Encoded.length;
var Counter = 0;
var Character;
var Decoded = "";
for (Counter = 0; Counter < Length; Counter++) {
    Character = Encoded.charAt(Counter);
    if (Character === 37 && Encoded.charAt(Counter + 1) === 50 && Encoded.charAt(Counter + 2) === 70) {
        Counter += 2;
        Decoded += "/";
    } else if (Character === 37 && Encoded.charAt(Counter + 1) === 51 && Encoded.charAt(Counter + 2) === 65) {
        Counter += 2;
        Decoded += ":";
    } else if (Character === 37 && Encoded.charAt(Counter + 1) === 50 && Encoded.charAt(Counter + 2) === 49) {
        Counter += 2;
        Decoded += "!";
    } else if (Character === 37 && Encoded.charAt(Counter + 1) === 50 && Encoded.charAt(Counter + 2) === 50) {
        Counter += 2;
        Decoded += "\"";
    } else if (Character === 37 && Encoded.charAt(Counter + 1) === 50 && Encoded.charAt(Counter + 2) === 51) {
        Counter += 2;
        Decoded += "#";
    } else if (Character === 37 && Encoded.charAt(Counter + 1) === 50 && Encoded.charAt(Counter + 2) === 52) {
        Counter += 2;
        Decoded += "$";
    } else if (Character === 37 && Encoded.charAt(Counter + 1) === 50 && Encoded.charAt(Counter + 2) === 53) {
        Counter += 2;
        Decoded += "%";
    } else if (Character === 37 && Encoded.charAt(Counter + 1) === 51 && Encoded.charAt(Counter + 2) === 68) {
        Counter += 2;
        Decoded += "=";
    } else if (Character === 37 && Encoded.charAt(Counter + 1) === 51 && Encoded.charAt(Counter + 2) === 70) {
        Counter += 2;
        Decoded += "?";
    } else {
        Decoded += Character;
    }
return Decoded;

} }

它不返回任何内容，而不是解码后的 URL(没有错误，也没有字符串)如果有人知道错误可能出在哪里，我将不胜感激。

Answer 1

我会使用 JS 的内置函数。
encodeURI()和 decodeURI()

decodeURI("https://developer.mozilla.org/ru/docs/JavaScript_%D1%88%D0%B5%D0%BB%D0%BB%D1%8B");

返回“https://developer.mozilla.org/ru/docs/JavaScript_шеллы”

因此无需创建自己的函数。