javascript - Serialize function with PhantomJS bridge -

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i have array of links use link parametr function scraped data phantomjs. how serilize function? for statemant runs paralely 3 function in 1 time , recive event error.

in case proper use async, how use in series? time of running functions different, how async should understood it's done , start new url?

var phantom = require('phantom')   , async = require('async');  var urls = [   'http://en.wikipedia.org/wiki/main_page',   'http://es.wikipedia.org/wiki/wikipedia:portada',   'http://de.wikipedia.org/wiki/wikipedia:hauptseite' ];  async.mapseries(urls, gettitle, function(err, result){     console.log(result); })  function gettitle (link, callback) {   phantom.create(function(ph) {     return ph.createpage(function(page) {       return page.open(link, function(status) {         return page.evaluate((function() {           return document.title;         }), function(result) {           callback(null, result);           return ph.exit();         });       });     });   }); };

i'd try like:

var links = [] var _ph  function init(cb) {     phantom.create(function(ph) {         //for each link in links call dostuff()         _ph = ph          dostuff(ph, link, cb)        })    }  function dostuff(ph, link, cb) {     ph.createpage(function(page) { //does things in parallel?       page.open(link, function(status) {         page.evaluate((function() {           document.title;         }), function(result) {           cb(null, result);           page.close();         });     }); }  var counter = links.length var titles;  function results(err, res) {   titles.push(res)    if(--counter == 0) {     //done     _ph.exit()   }  }  init(results)

probably not working code (i wrote here), hope idea. if want use 1 page, like:

var links = [] var _ph var _page  function init(cb) {     phantom.create(function(ph) {          _ph = ph          ph.createpage(function(page) {              _page = page              dostuff(link, cb)         }        })    }  function dostuff(page, link, cb) {       page.open(link, function(status) {         page.evaluate((function() {           document.title;         }), function(result) {           cb(null, result);           page.close();         });     }); }   var counter = links.length var titles;  function results(err, res) {   titles.push(res)    if(--counter == 0) {     //done     _ph.exit()     return   }    dostuff(links[counter], results)  }  init(results)

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