我正在研究一個 Url 解碼和編碼系統。但由于一些奇怪的原因，它只會解碼/編碼特定的字符串。此外，它似乎在字符串中包含特定片段時對其進行解碼/編碼。這很難解釋，但對于這可能行不通的事情卻很困惑。我試著弄清楚它的問題，但這只會讓整個問題看起來更不合邏輯。我希望有人可以幫助我。有解釋。如果代碼與它的風格相同，我會喜歡它。我也知道網上可能有一些軟件包可以輕松做到這一點，但我寧愿自己制作。這是我可以更多地練習 JS 的一種方式。// I know I don't have all the characters markek. I am doing that latervar Url = {  filterEncode : ["%2B","%3A","%3D","%3F","%2F","%26","%252F","%253A","%253D","%253F","%252B"],  filterDecode : ["+",":","=","?","/","&","%2F","%3A","%3D","%3F","%2B"],  decode : function(decodeText){    let returnString, a, b;    let filterEncode = Url.filterEncode;    let filterDecode = Url.filterDecode;    for (a = 0; a < filterEncode.length; a++){      let regexEn = new RegExp(filterEncode[a],"g");      let regexDe = new RegExp("/" + filterDecode[a],"g");      let regex = new RegExp(regexEn,"g");      let array = (decodeText.match(regex) || []).length      for (b = 0; b < array; b++){        returnString = decodeText.replace(filterEncode[a],filterDecode[a]);        decodeText = returnString;      }    }    return returnString;  },  encode : function(encodeText){    let returnString, a, b;    let filterEncode = Url.filterEncode;    let filterDecode = Url.filterDecode;    for (a = 0; a < filterEncode.length; a++){      let regexEn = new RegExp("[" + filterEncode[2] + "]","g");      let regexDe = new RegExp("[" + filterDecode[2] + "]","g");      let regex = new RegExp(regexEn,"g");      let array = (encodeText.match(regex) || []).length;      for (b = 0; b < array; b++){        returnString = encodeText.replace(filterDecode[a],filterEncode[a]);        encodeText = returnString;      }    }    return returnString;  }}// Saying it is undefinedconsole.log(Url.encode("="));// Encodes it just findconsole.log(Url.encode("%3F"));// Encodes both of them but for some odd reason encodes the// equal sign twice.console.log(Url.encode("%3F ="));我確實希望關于我的問題是什么，一切看起來都很清楚。我通常只是嘗試在這里搜索答案，但這個問題太混亂了，我不知道我到底應該搜索什么。