Loading JavaScript in the background using Java and HtmlUnit

I am currently facing a challenge while navigating a website using HtmlUnit.

This particular website adjusts certain buttons and displays or hides certain elements based on JavaScript events.

For instance, there is a text input box along with a button that remains unclickable until text is entered into the box. However, despite setting the value of the input text box, I do not see any updates reflected on the button.

To resolve this issue, I have experimented with various methods to ensure that the page waits for background updates:

  • Utilizing NicelyResynchronizingAjaxController() as the web client's ajax controller
  • Overriding processSynchron() to return true when configuring the ajax controller
  • Delaying the thread for a few seconds
  • Synchronizing on the page variable and invoking wait on it for a brief period
  • Implementing waitForBackgroundJavaScript on the web client
  • Running a loop while ensuring that the page's enclosing window's job manager has no remaining JavaScript tasks

Answer №1

It appears that the method you are utilizing is quite rudimentary. Consider:

  • implementing the type("...") function
  • subsequently waiting for background JavaScript execution with waitForBackgroundJavaScript()

If these suggestions do not resolve your issue, please share a comprehensive example of your code for further analysis and debugging.

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