How to recover scroll bar position with Show?

I'm using <Show> to render component. The component has scroll bar. But when I re-render if <Show when = { true } > I lost scroll bar position.
17 Replies
thetarnav
thetarnav2y ago
my two solution ideas: 1. You could probably just hide the component with display:none instead of conditionally rendering component 2. cache the previous scroll position onClenaup and reset it onMount
musiclover
musiclover2y ago
2nd solution is much better...I'll try it out thanks..
musiclover
musiclover2y ago
I'm trying 2nd solution, but it's not working. Can't I put signal inside? It seems when component is re-rendered by Show, the signal value goes 0. Does it re-create signal,too?
thetarnav
thetarnav2y ago
Does it re-create signal,too?
yup createSignal is pretty much like new Array(), new data instance
musiclover
musiclover2y ago
Isn't Solid component function called once? not like React
REEEEE
REEEEE2y ago
But Show unmounts it
musiclover
musiclover2y ago
Then, Should I put signal outside function?
thetarnav
thetarnav2y ago
not sure if you need a signal at all just store the position in a variable
musiclover
musiclover2y ago
Global variable?
thetarnav
thetarnav2y ago
if this component can be mounted in multiple places at once, you probably should manage the cache by a key or something, but just a let variable that you udpate is fine
musiclover
musiclover2y ago
Then, it's not re-usable component, whenever I use this component, I need to declare global variable..
thetarnav
thetarnav2y ago
you can re-use the variable too but you can also use the parent component for that
musiclover
musiclover2y ago
Is there no way to put any storable variable inside function in unmountable component ?
thetarnav
thetarnav2y ago
if you don't unmount the component, there is no problem but you unmount it and then mount a compleately new instance of it there are ways to solve it, but you need to have a link between diffferent component instances, it doens't self-contain the state anymore
musiclover
musiclover2y ago
Ok, So If we use <Show>, the component function will be called like React right?
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