Why does taking a screenshot of the HTML body using Javascript not show the analysis feedback?

www.may69.com · September 7, 2022, 12:20am

Hello, I am attempting to develop a plugin that develops flashcards of Go positions. The front of the flashcard is a go position. The back of the flashcard will be the same Go position after pressing shift-I (enabling analysis).

While the plugin does in fact toggle analysis via javascript, no screenshot includes the analysis feedback: even though you can see it in the browser, the downloaded image does not contain the analysis markers.

To replicate the problem

Download the source code repo:

Install and use the extension as documented here:

github.com

metaperl/baduk-flash/blob/main/README.md#how-to-use

# baduk-flash
Make flashcards of baduk/go/weiqi positions

# How to Use

Clone this repo into a folder

Load this extension as an unpacked extension as 
[documented here](https://webkul.com/blog/how-to-install-the-unpacked-extension-in-chrome/)

Visit a game that has analysis such as 
[this one](https://online-go.com/game/46749656)

Then press the Extension button (it should be a B)

Notice that the analysis feedback is never saved in the screenshot.

## CAVEAT

You must reload the webpage after pressing the Extension button because otherwise you get the error:

This file has been truncated. show original

system · December 7, 2022, 8:21am

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