jarib/log.rb

## log.rb
require 'selenium-webdriver'

profile = Selenium::WebDriver::Firefox::Profile.new
profile.log_file = "/tmp/firefox.log"

browser = Selenium::WebDriver.for :firefox, :profile => profile

browser.get "data:text/html;content-type=utf-8,#{URI.escape DATA.read}"
browser.find_element(tag_name: 'a').click

browser.quit

Dir['/tmp/firefox{,-*}.log'].each do |path|
  puts path
  puts File.read(path)
end


__END__
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>Page Title</title>
</head>
<body>
  <a href="#" onclick="throw 'oops'">Click me</a>
</body>
</html>
	require 'selenium-webdriver'

	profile = Selenium::WebDriver::Firefox::Profile.new
	profile.log_file = "/tmp/firefox.log"

	browser = Selenium::WebDriver.for :firefox, :profile => profile

	browser.get "data:text/html;content-type=utf-8,#{URI.escape DATA.read}"
	browser.find_element(tag_name: 'a').click

	browser.quit

	Dir['/tmp/firefox{,-*}.log'].each do \|path\|
	puts path
	puts File.read(path)
	end


	__END__
	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8">
	<title>Page Title</title>
	</head>
	<body>
	<a href="#" onclick="throw 'oops'">Click me</a>
	</body>
	</html>