atob 或者btoa is not defined

atob 或者btoa 方法是浏览器实现的而非 js 自带,需要需要使用这两个方法需要自己实现  最前面加上这段js 就可以使用了

global.Buffer = global.Buffer || require('buffer').Buffer;

if (typeof btoa === 'undefined') {
    global.btoa = function (str) {
        return new Buffer.from(str, "binary").toString('base64');
    };
}
if (typeof atob === 'undefined') {
    global.atob = function (b64Encoded) {
        return new Buffer.from(b64Encoded, 'base64').toString("binary");
    };
}

(function(a) {
    var a = atob(a);
    var b = [];
    for (var i = 0; i < 32; i++) {
        b.push(a[i].charCodeAt())
    }
    var c = [];
    for (var i = 0; i < 16; i++) {
        c.push(0)
    }
    var d = (b[0] % 8) * 2 - 1;
    if (d < 0) {
        d = 5
    }
    for (var i = 0; i < 16; i++) {
        var j = (((i + 1) % 16) * d) % 16;
        c[j] = b[i] ^ b[16 + i]
    }
    var a = '';
    for (var i = 0; i < 16; i++) {
        a += String.fromCharCode(c[i])
    }
    console.log(btoa(a))
}
)("SZZ0XDbSPf3OdgwIM2axNScLRZjRvmgmcr7S6J/d9dA=");