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fix: solve the smooth scrolling scene, the y value obtained is the data 100ms ago #1439

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@xujiujiu xujiujiu commented Apr 7, 2024

In the smooth scrolling scene on the mobile phone, the y value obtained by the monitored scroll event is too small, causing the bottom content to be invisible during playback.

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@xujiujiu xujiujiu closed this Apr 7, 2024
@xujiujiu xujiujiu reopened this Apr 7, 2024
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xujiujiu commented Apr 7, 2024

When listening to the scroll event, the x and y data of the node cannot be obtained because the target cannot be obtained through throttle

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xujiujiu commented Apr 7, 2024

image

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xujiujiu commented Apr 7, 2024

image there target is undefined

...arg,
target: arg.target
}
})
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Is this argument transformation something specific to MouseEvent/TouchEvent/DragEvent ?

I think this needs a bit more explanation; the T type here is supposed to be generic, right?

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I'm still wondering why we need to do the transformation?
is it that an explicit reference to the target needs to be saved before the timeout?
I would have thought that args being in a closure should handle saving the reference?

timeout = null;
func.apply(context, args);
if (timeout) {
clearTimeout(timeout)
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I can't see why you need to clear the timeout here as it is a 'one-shot' timeout.
clearing it would make sense if it was setInterval, but it seems to me that it's already been called and won't be called again?
Is there some concurrency or similar here that is possible?

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