js解压ZIP数据

js解压ZIP数据

第一步：

在html中使用script标签引入pako.min.js文件

<script src="https://cdnjs.cloudflare.com/ajax/libs/pako/2.0.4/pako.min.js"></script>

第二步：

function Utf8ArrayToStr(array) {
	var out, i, len, c;
    var char2, char3;
    out = "";
    len = array.length;
    i = 0;
    while (i < len) {
       c = array[i++];
       switch (c >> 4) {
            case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
               out += String.fromCharCode(c);
               break;
            case 12: case 13:
               char2 = array[i++];
               out += String.fromCharCode(((c & 0x1F) << 6) | (char2 & 0x3F));
               break;
            case 14:
               char2 = array[i++];
               char3 = array[i++];
               out += String.fromCharCode(((c & 0x0F) << 12) |
                     ((char2 & 0x3F) << 6) |
                     ((char3 & 0x3F) << 0));
               break;
        }
    }
    return JSON.parse(out);
}

第三步：

解压zip数据

// 解压zip数据
function unzip(b64Data) {
	var strData = atob(b64Data);
    var charData = strData.split('').map(function (x) { return x.charCodeAt(0) });
    var binData = new Uint8Array(charData);
    var data = pako.inflate(binData);
    return Utf8ArrayToStr(data);
}

举例：

const data = "";
const datalist = unzip(data);
console.log(datalist)