Which JavaScript sandbox allows you to manually run scripts from embed code?

Question

JavaScript

Recommend a sandbox for JavaScript with the ability to insert an embed code into the site with a button for manually launching the script. Just like on the learn.javascript.ru site (only after pressing the Play button, the script is executed):
learn.javascript.ru/global-object (see any of the examples). Previously used jsfiddle, but did not find this function. Thank you!

Answer 1

well, what are you?)
https://learn.javascript.ru/play
Sorry, the Sandbox service is no longer available on the site.
All examples saved by users are available for download from the same links, but new sandboxes cannot be created.
Alternatively, you can use plnkr.co, codepen.io, or jsfiddle.net.
plnkr.co
codepen.io

Answer 2

Here it is: An
iframe with the result is also possible:
jsfiddle.net/msrqwt7r/embedded/result

Answer 3

Turn on the inspector, everything is written there)
Here is the link https://prismjs.com/plugins/toolbar/