What are reactive statements in Svelte?

What are reactive statements in Svelte?

Reactive statements in Svelte are used to automatically update the DOM when the values they depend on change.

Can you give me an example of a reactive statement?

Sure! A simple example is using the $: syntax. For instance, $: doubled = num * 2; will update doubled whenever num changes.

How do reactive statements differ from regular variables?

Reactive statements automatically re-run when their dependencies change, while regular variables do not have this behavior.

Are there any performance considerations with using reactive statements?

Yes, while reactive statements are powerful, overusing them can lead to performance issues, so it's best to use them judiciously.