JS get data in html file

[Oberly21]

Good morning everyone.
I'm here with a big favour.
I would like someone to guide me in the right direction

In my work place i need to find solution to display data on the monitor from the website but to have certain data more simply shown than it is on the website.
I know to do so i could simply open html file in full screen and remove all the cursor/info bar ect. But the struggle is how do i get data from external url in to the html file using javascript?

For example:
I could open html file where javascript get image from external url and display certain text that is from external url.
Could you please help me to figure out how to do this? At least beggining with what to start with.
Thanks
Kind regards
Oberly

 

[Oberly21]

Thanks for info. Will try to look what can i get out of this. Maybe somebody else have got some sample from past to share?

 

[Oberly21]

Be aware that XMLHttpRequests in the client browser only work when running on the same domain. If you're trying to run this on domainA.com (or even your local machine) and make a request to domainB.com to get the information, I'm afraid it won't work unless you have control of the response coming from the domainB.com in order to include CORS headers.

In other words, what you're trying to do is absolutely possible but JS may not be the best thing to use for it.

Well if it's not the best option to use JS. Then could python be better solution for this?