js解压gzip_unzip解压命令

//js解压gzip
function unzip(key) { 
   
// 解压
    // 将二进制字符串转换为字符数组
    var charData = key.split('').map(function (x) { 
   
        return x.charCodeAt(0);
    });
    // 将数字数组转换成字节数组
    var binData = new Uint8Array(charData);
    // 解压
    var data = pako.inflate(binData);
    // key = String.fromCharCode.apply(null, new Uint16Array(data));
    var res = '';
    var chunk = 16 * 1024;
    var i;
    for (i = 0; i < data.length / chunk; i++) { 
   
        res += String.fromCharCode.apply(null, data.slice(i * chunk, (i + 1) * chunk));
    }
    res += String.fromCharCode.apply(null, data.slice(i * chunk));
    // 将GunZip ByTAREAR转换回ASCII字符串
    return decodeURIComponent(escape(res));

}