PhantomJS - ilya-khadykin/notes-outdated GitHub Wiki

PhantomJS is a web browser that can be controlled from command line, it is based on WebKit.

Purpose:

• headless website testing
• screen capture
• page automation
• network monitoring

Browser	Engine (2017-01-04)
Safari	WebKit
Firefox	Gecko
Google Chrome	Blink
Internet Explorer	Trident
Microsoft Edge	EdgeHTML

Installation

via npm:

npm install -g phantomjs

Error Handling

// your error handler
phantom.onError = function(msg, trace) {
  var msgStack = ['PHANTOM ERROR: ' + msg];
  if (trace && trace.length) {
    msgStack.push( 'TRACE:' );
    trace.forEach( function(t) {
      msgStack.push( '->' + (t.file || t.sourceURL) + ': ' + t.line
    };
  console.error( msgStack.join('\n'));
  // exit with negative status code
  phantom.exit(1);
};

System API

var system = require('system');
var os = system.os;

console.log("You're on " + os.architecture + ' ' + os.name + ' machine.\n');

Read System Arguments

var system = require('system');
var args = system.args;

if (args.length < 2) {
  throw new Error( 'Arguments are missing!');
}
var scriptName = args[0];
var name = args[1];

And pass arguments in order: phantomjs phantom_script.js arg1 arg2 arg3

webpage API

var system = require('system');
var page = require('webpage').create();

var url = system.args[2];

page.open( url, function( status ) {
  console.log('#########################################');
  console.log('Opened ' + url + ' with status: ' + status);
  page.render('site_screenshot.png');

  phantom.exit();
});