单击函数未执行正在执行 Nightmare.js

Question

我正在尝试使用 nightmare 进行一些抓取，我的工作几乎可以正常工作。问题是我在调用 evaluate() 和 run() 后尝试执行 click() 时遇到问题。在我运行这两个功能之后，我试图执行另一次单击以将自己移动到网站的另一部分，但没有执行 click()。

此时我确定是什么问题，我几乎没有假设，也许这些函数是异步的，我正在尝试 click() 当回调尚未准备好或其中一个函数结束时de current nightmare 对象，我不再有范围了。

var Nightmare = require('nightmare');
//var nightmare = Nightmare({show:true})
var express = require('express');
var fs = require('fs');
var request = require('request');
var cheerio = require('cheerio');
var app     = express();

var urlWeb = "someurl";
var selectCity = "#ddl_city";
var selectTheater = "#ddl_theater";
var enterBtn = "#btn_enter";
var mainSelector = "#aspnetForm";
var flagReady = true;

new Nightmare({show:true})
.goto(urlWeb)
.wait(selectCity)
.select(selectCity, '19')
.wait(8000)
.select(selectTheater, '12')
.wait(1000)
.click(enterBtn)
.wait(mainSelector)
.evaluate(function(){

        //returning HTML for cheerio
        return document.body.innerHTML; 
})
.run(function(err, nightmare){
     if (err) return console.log(err);

    // Loading HTML body on jquery cheerio
     var $ = cheerio.load(nightmare);

    //Looping on each div for seccion de Carterla para Hoy
    $('.showtimeDaily').each(function(index, element){
        //spanish title
        console.log($(this).find('h3').children().text());
        //english title
        console.log($(this).find('h4').text());
        //schedule for today
        console.log($(this).find('li').children().text() + " ");
        //img for movie
        console.log($(this).find('img').attr('src'));
            //show time data such as gender, lenght, language
        console.log($(this).find('.showtimeData').text());
        var showtimeData = $(this).find('.showtimeData').text();
        //console.log(JSON.stringify(showtimeData.replace(/\t|\n/g, "")));
    })

        console.log('Done!');


})
//*****here is wen I try to click*****
.click('a[href="../showtimes/weekly.aspx"]');

Answer 1

我遇到了异步回调的问题，所以我所做的是嵌套调用噩梦对象以确保任务运行一个接一个地执行。这是代码：

nightmare
.goto(urlWeb)
.wait(selectCity)
.select(selectCity, '19')
.wait(8000)
.select(selectTheater, '12')
.wait(1000)
.click(enterBtn)
.wait(mainSelector)
.evaluate(function(){

        //returning HTML for cheerio
        return document.body.innerHTML; 
})
.then(function(body){
    // Loading HTML body on jquery cheerio
     var $ = cheerio.load(body);

    //Looping on each div for seccion de Carterla para Hoy
    $('.showtimeDaily').each(function(index, element){
        //spanish title
        console.log($(this).find('h3').children().text());
        //english title
        console.log($(this).find('h4').text());
        //schedule for today
        console.log($(this).find('li').children().text() + " ");
        //img for movie
        console.log($(this).find('img').attr('src'));
            //show time data such as gender, lenght, language
        console.log($(this).find('.showtimeData').text());
        var showtimeData = $(this).find('.showtimeData').text();
        //console.log(JSON.stringify(showtimeData.replace(/\t|\n/g, "")));
    })
   //**Here I call nightmare to run after the first call back is done*****
    nightmare
        .goto('')
        .wait('body')
        .title()
        .then(function(title){
            console.log(title);
        });

        console.log('Done!');


});

单击函数未执行正在执行 Nightmare.js

Click function not executing executing Nightmare.js

node.js

nightmare