In this recipe, we will continue with onResourceRequested
, introduce the onResourceError
callback, and use them to illustrate a strategy for randomly causing images to fail to download.
To run this recipe, we will need a script that loads a web page; that web page must contain images so that we can block them.
The script in this recipe is available in the downloadable code repository as recipe12.js
under chapter03
. If we run the provided example script, we must change to the root directory for the book's sample code.
Lastly, the script in this recipe runs against the demo site that is included with the cookbook's sample code repository. To run that demo site, we must have Node.js installed. In a separate terminal, change to the phantomjs-sandbox
directory (in the sample code's directory), and start the app with the following command:
node app.js