Javascript十六进制到ASCII与拉丁扩展符号

Question

我得到字符串的十六进制值，如下所示：

String has letters with diacritics: č,š,ř, ...

此字符串的十六进制值为：

0053007400720069006E006700200068006100730020006C0065007400740065007200730020007700690074006800200064006900610063007200690074006900630073003A0020010D002C00200161002C00200159002C0020002E002E002E

问题是，当我试图将这个值转换回ascii时，它不能很好地转换č，ř，。。并返回带有问号的小方框的符号，而不是这些符号。

我将十六进制转换为ascii的代码：

function convertHexadecimal(hexx){

  let index = hexx.indexOf("~");
  let strInfo = hexx.substring(0, index+1);
  let strMessage = hexx.substring(index+1); 
  var hex  = strMessage.toString();
  var str = '';     
  for (var i = 0; i < hex.length; i += 2){     
      str += String.fromCharCode(parseInt(hex.substr(i, 2), 16));     
  }
  console.log("Zpráva: " + str);
  var strFinal = strInfo + str;
  return strFinal; 
}

有人能帮我吗？

Answer 1

首先是一个示例解决方案：

let demoHex = `0053007400720069006E006700200068006100730020006C0065007400740065007200730020007700690074006800200064006900610063007200690074006900630073003A0020010D002C00200161002C00200159002C0020002E002E002E`;

function hexToString(hex) {
    let str="";
    for( var i = 0; i < hex.length; i +=4) {
       str += String.fromCharCode( Number("0x" + hex.substr(i,4)));
    }
    return str;
}
console.log("Decoded string: %s", hexToString(demoHex) );