JavaScript相当于Java'；用于解码字节数组的s字符集/字符串类组合

在Java中，如果我们知道字节数组的编码，我们可以对其进行解码，并得到相应的字符，如下所示-

Charset charset = Charset.forName(encoding);
String decodedString = new String(byteArray, charset);

如何在JavaScript中实现相同的结果

假设我读了一个我知道是windows-1253编码的文件（希腊文）。为了正确显示文件内容，我必须解码文件中的字节

如果我们不解码（或在不知道编码的文本编辑器中打开文件），我们可能会看到类似的情况-

ÁõôÞ åßíáé ç åëëçíéêÞ.

但是当这个文本（即字节）被解码时，我们得到

Αυτή είναι η ελληνική.

---

在JavaScript中，字符串始终是UTF-16编码的

希望这能帮助您：

var getString = function (strBytes) {

    var MAX_SIZE = 0x4000;
    var codeUnits = [];
    var highSurrogate;
    var lowSurrogate;
    var index = -1;

    var result = '';

    while (++index < strBytes.length) {
        var codePoint = Number(strBytes[index]);

    if (codePoint === (codePoint & 0x7F)) {


    } else if (0xF0 === (codePoint & 0xF0)) {
        codePoint ^= 0xF0;
        codePoint = (codePoint << 6) | (strBytes[++index] ^ 0x80);
        codePoint = (codePoint << 6) | (strBytes[++index] ^ 0x80);
        codePoint = (codePoint << 6) | (strBytes[++index] ^ 0x80);
    } else if (0xE0 === (codePoint & 0xE0)) {
        codePoint ^= 0xE0;
        codePoint = (codePoint << 6) | (strBytes[++index] ^ 0x80);
        codePoint = (codePoint << 6) | (strBytes[++index] ^ 0x80);
    } else if (0xC0 === (codePoint & 0xC0)) {
        codePoint ^= 0xC0;
        codePoint = (codePoint << 6) | (strBytes[++index] ^ 0x80);
    } 

        if (!isFinite(codePoint) || codePoint < 0 || codePoint > 0x10FFFF || Math.floor(codePoint) != codePoint)
            throw RangeError('Invalid code point: ' + codePoint);

        if (codePoint <= 0xFFFF)
            codeUnits.push(codePoint);
        else {
            codePoint -= 0x10000;
            highSurrogate = (codePoint >> 10) | 0xD800;
            lowSurrogate = (codePoint % 0x400) | 0xDC00;
            codeUnits.push(highSurrogate, lowSurrogate);
        }
        if (index + 1 == strBytes.length || codeUnits.length > MAX_SIZE) {
            result += String.fromCharCode.apply(null, codeUnits);
            codeUnits.length = 0;
        }
    }

    return result;
}

var getString=function（strBytes）{
var MAX_SIZE=0x4000；
var codeUnits=[]；
替代变量；
替代变量；
var指数=-1；
var结果=“”；
而（++指数codePoint=（很遗憾，codePoint不容易。节点或浏览器？你能给我们一个你想从/转换到的字符集的例子吗？你的想法涉及到什么？String.fromCharCode.apply（null，arr）@crush更新的问题和例子。