Unable to get the value of a canvas

muhammadtalha

Hello Gurus,

I am trying to get a value of canvas which is coming as a aria-label using JS after the iframe is fully loaded. I have highligted the value which I need to get after iframe is fully loaded.

For that I am using the following code snippet, in this code I am able to get the document part of the iframe, but when I try to find a div which has a specific card id, its giving me null. Is there anything I can do to acheieve this. My main purpose is to get the value of the card with the id after the domo embedded iframe is being loaded to a page.

MattTheGuru

Hello! Here is a link to an article that reviews why this is technically impossible to do in the way of "webscraping" the data from the iFrame. The only way to get data from an iFrame is if the target iFrame sends out a window.postMessage(). This route does require more development, but is the only way to have a script interact with data contained in an iFrame.

https://robertnyman.com/html5/postMessage/postMessage.html