Phantomjs / Node.js - Refactoring block of code - node.js

Question

I am writing a testing application, for the company where I work, using Node.js and Phantomjs. Right now, the relevant part of my code is something like this:
phantom.create(function (ph) {
ph.createPage(function (page) {
page.set('viewportSize', { width: 1920, height: 1080 });
page.set('settings.javascriptEnabled', true);
page.set('settings.loadImages', true);
page.set('settings.localToRemoteUrlAccess', true);
page.set('settings.userAgent', userAgentStrings[randomInt(0, 5)]);
page.set('settings.webSecurityEnabled', false);
page.set('settings.resourceTimeout', 5000);
page.open(URL, function (status) {
if (status == 'success') {
page.evaluate(function (result) {
return document.title;
}, function (result) {
setTimeout(function () {
log.info('Status: ', status);
ph.exit();
}, 60 * 1000);
});
} else if (status == 'fail') {
log.error('Status: ', status);
ph.exit();
}
});
});
});
My question is this: Is there a way to refactor my code in such a way that I can call the "page.open(..." function from outside the "phantom.create(..." block?
I plan to implement node-cron and have one block of code where I set up all the options for the page and another one that I will actually use to open the page. In the end, the opening part will be handled by node-cron, repeating ad infinitum.

Answer 1

Here is a quick example on how to do this. You just need to store your phantom object somewhere and reuse it. Be aware that I made this simple so that you can reuse the concept but that you would need more error handling.
var jobRunner = function() {
// The phantom object will be stored here
this.ph;
// The page object will be stored here
this.page;
};
jobRunner.prototype.start = function(readyCallback) {
var self = this;
phantom.create(function (ph) {
self.ph = ph;
self.ph.createPage(function (page) {
page.set('viewportSize', { width: 1920, height: 1080 });
page.set('settings.javascriptEnabled', true);
page.set('settings.loadImages', true);
page.set('settings.localToRemoteUrlAccess', true);
page.set('settings.userAgent', userAgentStrings[randomInt(0, 5)]);
page.set('settings.webSecurityEnabled', false);
page.set('settings.resourceTimeout', 5000);
self.page = page;
readyCallback();
});
});
};
jobRunner.prototype.doUrl = function(url) {
var self = this;
this.page.open(URL, function (status) {
if (status == 'success') {
page.evaluate(function (result) {
return document.title;
}, function (result) {
setTimeout(function () {
log.info('Status: ', status);
self.ph.exit();
}, 60 * 1000);
});
} else if (status == 'fail') {
log.error('Status: ', status);
self.ph.exit();
}
});
}
var CronJob = require('cron').CronJob;
var phantomJob = new jobRunner();
// Wait for Phantom to be ready then start the Cron Job.
phantomJob.start(function() {
var cron = new CronJob('*/5 * * * * *', function() {
phantomJob.doUrl("http://yoururl.com");
});
});