Framework Internals

See how Vue reactivity works with an interactive visualization. Watch a Proxy intercept property reads to track dependencies, writes trigger the effects that depend on them, and computed values cache until a dependency changes.

See how Svelte 5 runes work with an interactive visualization. Watch $state create a signal, $derived build a dependency graph, $effect subscribe, and the compiler turn a component into surgical DOM updates with no virtual DOM.

See how Angular change detection works with an interactive visualization. Compare zone.js triggering a full tree check, OnPush skipping unchanged subtrees, and signals marking only the exact components that read a changed value.