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Asked: 2026-05-11T10:15:21+00:00

I am creating a progressively built single-page (if Javascript is enabled) blog which uses

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I am creating a progressively built single-page (if Javascript is enabled) ‘blog’ which uses AJAX to request HTML for new pages the user is navigating to.

When the user navigates to new pages they will be added one after another into the DOM in a small window with ‘overflow: hidden;’:

<div id='foo' style='width:200px; height:100px;'>   <div id='bar' style='width:999999px'>   </div> </div>

When an AJAX call returns success a div will be appended into #bar.

How will it affect the browser when there are a lot of hidden pages outside the #foo width?

Do I need to remove the divs from the DOM as the user navigates away from them? Then I will need to make a new AJAX request if the user chooses to navigate to them again. 🙁

Thanks

Willem

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1 Answer

  1. No matter what people say GC will do for you, whether in JavaScript or C# or Java, watch out and forget the silly promise of automatic management. Clean it up explicitly and sleep well.

    Very simple reason: closures leak and leak pretty bad the moment you move out of most simplistic scenarios (the case both for brower’s JavaScript as well as C#/java).

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