How to pass a javascript variable into a erb code in a js view?

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As far as i know there is no way to do it directly and the reason is fairly simple too, html is executed at the server side and javascript is a client side language which means its executed in your local browser, thats why if you even try to pass a variable between the two you’ll have to make a request to the server,
However this problem is tackled by calling an AJAX request, this AJAX request does the same thing as sending a new request to the server however it does that without refreshing or reloading the page to it gives the users the illusion that no request was made.

a guy asks a similar question Here

and you can learn more about AJAX Here on MDN:

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