python使用PyV8执行javascript代码示例分享
安装相应的库,我使用的是PyV8
需要注意的是里面写的function函数需要用()括起来
import PyV8
class Test():
def js(self):
ctxt = PyV8.JSContext()
ctxt.enter()
func = ctxt.eval('''(function(){return '###'})''')
print func()
print '213'
if __name__ == '__main__':
crawler = Test()
crawler.js()
输出的结果是:
>>>
###
213
>>>
向js代码中传递参数的方法
func = ctxt.eval(''' (function(a){return encodeURIComponent(a)})''')
print func(a)
a是需要传递的参数,encodeURIComponent是js中的一种编码方式
我遇到这个问题是在做爬虫的时候,进行post传值的过程中,一些中文字符被网站的js使用encodeURIComponent进行了编码导致不能提交可识别的代码,所以想到这个办法在python程序中进行编码,之后再传值,就可以很好的解决这个问题

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