execjs随心所欲运行抠出来的js代码：报错什么都不是问题 execjs._exceptions.ProgramError: ReferenceError: $ is not defined

起因

今天扣出一段js想用execjs执行，报错$未定义，也就是说execjs不能执行jquery，决定试试用nodejs来执行。

execjs._exceptions.ProgramError: ReferenceError: $ is not defined
1

解决方案

1、安装jsdom
cnpm i jsdom -g

2、安装 jquery
cnpm i jquery -g

3、查询全局引用路径，方便execjs调用
cnpm root -g
返回我的安装路径：D:\Program Files\nodejs\node_modules

如果使用npm，则
npm root -g
返回我的安装路径：C:\Users\Administrator\AppData\Roaming\npm\node_modules

具体调用

jQueryDomstr = '''
        var jsdom = require('jsdom');
        const { JSDOM } = jsdom;
        const { window } = new JSDOM();
        const { document } = (new JSDOM('')).window;
        global.document = document;
        var $ = jQuery = require('jquery')(window);
        '''

jsstr = '''
        commitAnswerToBackStage = function(k, a, g, d, f, i, c,sk,cookie) {
            $.ajax({
                type: "post",
                url: "http://www.example.com/ess/service/myexam/myExamAo!doCommitExam.do",
                async: false,
                data: {
                    myExamAnswer: k.toString(),
                    userAccount: a,
                    domainCode: g,
                    examId: d,
                    paperId: f,
                    series: i,
                    sid: c,
                    secretKey: sk,
                },
                beforeSend:function(request){
                    request.setRequestHeader("Cookie",cookie);
                },
                headers:{
                   'Connection': "Keep-Alive",
                   'Content-Type': "application/x-www-form-urlencoded;charset=UTF-8",
                    'Accept': "application/json, text/javascript, */*; q=0.01",
                    'X-Requested-With':"XMLHttpRequest",
                    'Referer':"http://www.example.com/bps/index.html",
                    'User-Agent':"Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.198 Safari/537.36",
                    'Cookie':cookie,
                  },
                dataType: "json",
                success: function(n) {
                    console.log(n)
                },
                error: function() {
                    console.log("error")
                }
            });
        }
    '''
rid = self.session.cookies['rid']
print(rid)
cookie = 'fxInd=I; fxCode=Aundefined; rid=' + str(rid)

jsrt = jQueryDomstr+jsstr
compile_js = execjs.compile(jsrt,cwd=r'C:\Users\Administrator\AppData\Roaming\npm\node_modules') # 这里是上一步查询出来jquery安装路径
result = compile_js.call("commitAnswerToBackStage", str(h), int(userAccount), int(domainCode), int(examId), int(paperId),int(series),str(ssid),str(secretKey),cookie)
return result
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