Python 执行javaScript代码

引入第三方包

pip install PyExecJS -i https://mirrors.aliyun.com/pypi/simple/ 或者 pip insyall PyExecJS

调用js文件进行方法执行

import execjs
Passwd = execjs.compile(open(r"web.js").read()).call('deba','Zabc')
print(Passwd)

将下面的js 保存为web.js文件

function base64decode(str) {
    var base64EncodeChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
    var base64DecodeChars = new Array(-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1, -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1);
    var c1, c2, c3, c4;
    var i, len, out;
    len = str.length;
    i = 0;
    out = "";
    while (i < len) {
        do {
            c1 = base64DecodeChars[str.charCodeAt(i++) & 255]
        } while (i < len && c1 == -1);
        if (c1 == -1) {
            break
        }
        do {
            c2 = base64DecodeChars[str.charCodeAt(i++) & 255]
        } while (i < len && c2 == -1);
        if (c2 == -1) {
            break
        }
        out += String.fromCharCode((c1 << 2) | ((c2 & 48) >> 4));
        do {
            c3 = str.charCodeAt(i++) & 255;
            if (c3 == 61) {
                return out
            }
            c3 = base64DecodeChars[c3]
        } while (i < len && c3 == -1);
        if (c3 == -1) {
            break
        }
        out += String.fromCharCode(((c2 & 15) << 4) | ((c3 & 60) >> 2));
        do {
            c4 = str.charCodeAt(i++) & 255;
            if (c4 == 61) {
                return out
            }
            c4 = base64DecodeChars[c4]
        } while (i < len && c4 == -1);
        if (c4 == -1) {
            break
        }
        out += String.fromCharCode(((c3 & 3) << 6) | c4)
    }
    return out
};

function deba(stt) {
    var photosr = new Array();
    packed=stt
    eval(eval(base64decode(packed).slice(4)));
    return photosr
}

直接执行简单的js代码

import execjs
js = execjs.compile('''function sum(i,j){sum=i+j;return sum}''')
result = js.call('sum', 1, 2)
print(result)

分步读取和执行

# 读取js文件返回
def js_from_file(file_name):
    with open(file_name, 'r', encoding='UTF-8') as file:
        result = file.read()

    return result

def post_file():
    context1 = execjs.compile(js_from_file('./test001.js'))
    result1 = context1.call("sum", 2, 3)

js代码

function sum(i, j) {
    sum = i + j;
    return sum
}