js2py的使用

基本使用:

import execjs
import  js2py
un ='''
function sample(x)
{
    return func2(x)
}
'''
print(js2py.eval_js(un)("Hi"))

import js2py

js = """
function escramble_758(){
var a,b,c
a='+1 '
b='84-'
a+='425-'
b+='7450'
c='9'
document.write(a+c+b)
}
escramble_758()
""".replace("document.write", "return ")
result = js2py.eval_js(js)


# 第二种:执行js库或代码多,函数多的时候
with open('./get_key.js') as fp:
    js = fp.read()
    # ctx2 = execjs.compile(js)
    context = js2py.EvalJs()
    context.execute(js)
    vl5x=context.getKey(cookie)

js内部数据向Python代码中传递

gen_guid="""
function createGuid() {
    return (((1 + Math.random()) * 0x10000) | 0).toString(16).substring(1);
}
var guid1 = createGuid() + createGuid() + "-" + createGuid() + "-" + createGuid() + createGuid() + "-" + createGuid() + createGuid() + createGuid();

"""
    context = js2py.EvalJs()
    context.execute(gen_guid)
    guid=context.guid1 # 将guid1传递到Python中
    print guid

编码问题

在js2py执行base64.js的时候,遇到0xe4
‘utf8’ codec can’t decode byte 0xe4 in position 28: invalid continuation byte

使用decode(‘latin1’)解码js

get_docid = js2py.eval_js(DocID_js.decode('latin1'))