当我解析一个静态HTML页面，我的Node.js应用效果很好。 然而，当网址是JavaScript生成的页面，应用程序无法正常工作。 我怎样才能凑一个JavaScript生成的网页？
我app.js
var express = require('express'),
fs = require('fs'),
request = require('request'),
cheerio = require('cheerio'),
app = express();
app.get('/scrape', function( req, res ) {
url = 'http://www.apache.org/';
request( url, function( error, response, html ) {
if( !error ) {
var $ = cheerio.load(html);
var title, release, rating;
var json = { title : "" };
$('body').filter(function() {
var data = $(this);
title = data.find('.panel-title').text();
json.title = title;
})
}
fs.writeFile('output.json', JSON.stringify(json, null, 4), function(err) {
console.log( 'File successfully written! - Check your project directory for the output.json file' );
});
// Finally, we'll just send out a message to the browser reminding you that this app does not have a UI.
res.send( 'Check your console!' );
});
});
app.listen('8081');
console.log('Magic happens on port 8081');
exports = module.exports = app;
