Is it necessary to call detach() in rangy?

Utilizing the rangy library in my project and reviewing the documentation for detach: "Destroys the range when it is no longer to be used."

I am encountering a dilemma as there isn't a suitable location for me to invoke detach in my code for certain ranges that I create using cloneRange. Given that this code may be called multiple times in an editor, should I be concerned about potential memory consumption if I fail to call detach, or will the garbage collection eventually handle unreferenced ranges?

In essence, my question is whether Rangy retains references to ranges created with cloneRange, thereby inhibiting proper garbage collection.

javascriptrangy

Answer №1

There are essentially two distinct methods for detaching: one specific to native ranges (those created by document.createRange()), and the other exposed by Rangy on its range objects.

Native DOM's Detach

The presence of a detach method is required by the DOM Level 2 standard.

The purpose behind having a detach function was to allow browsers to release computational resources. Browsers need to keep track of ranges as long as they're in use. Based on discussions from a recent bug report, it seems that:

  1. Most applications rarely utilize Range.detach.

  2. In Firefox, it doesn't do anything.

Additionally, WHATWG deems it a no-operation, suggesting that browsers may follow suit in the foreseeable future.

Rangy's Detach Method

Rangy's detach function essentially calls the DOM's version while performing additional internal tasks.

Upon reviewing Rangy's source code, I couldn't find any indications that using detach on a Rangy-created range would prevent memory management issues.

Curious about Tim Down's stance (the creator of Rangy), I stumbled upon a post by him here. It appears that he's open to phasing out detach(). However, it might be some time before Rangy eliminates it completely, potentially for backward compatibility reasons.

Therefore, it's probably best not to bother invoking it.

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