phantomstream
Write and automate PhantomJS scripts inside node, using a standard Stream interface.
Getting Started
First off, install the phantomstream module.
npm install phantomstream
Next, create a simple script named "myscript.js".
phantomstream = require("../phantomstream")
// Open up a PhantomJS stream that listens for commands that look like
// "TITLE <url>". Browse to the URL and write the title back via the stream.
var conf = {logger: console}
var ps = phantomstream.open(conf, function(nodestream, phantom, require, global) {
// This callback executes inside of PhantomJS, not node. To see the API
// available to you in PhantomJS, check out their documentation:
// http://code.google.com/p/phantomjs/wiki/Interface
var page = require("webpage").create()
// Listen for the "TITLE <url>" commands via the streaming interface.
nodestream.on("data", function(data) {
var matches = /TITLE\s*(.+)/.exec(data)
if (matches) {
var url = matches[1]
// Got a TITLE command, use the PhantomJS page object to browse
// to that page, get the document title, and write it back to the stream.
console.info("opening", url)
page.open(url, function() {
var title = page.evaluate(function() {
return document.title
})
console.info("sending title =", title)
nodestream.write(title)
})
}
})
})
// Send an TITLE command to our PhantomJS process and echo the response.
ps.write("TITLE http://www.google.com")
ps.on("data", function(data) {
console.info("node received:", data.toString())
process.exit()
})Run your script with node.
node myscript.js
...you should see output like this:
[phantom-stdout] opening http://www.google.com
[phantom-stdout] sending title = Google
node received: Google
Enjoy! For more ideas on what is possible inside the callback for
phantomstream.open(), read the
PhantomJS documentation.
Don't forget try out some demos from the examples/ directory :)
Alternatives
If you are looking for higher-level implementations that wrap the PhantomJS API, check these out: