Algoritmler (animasiýa)Brauzeriňizde işleýärBarlanan sene: 1 oktýabr 2026

Virtual DOM Diff (Keys): animasiýa

Virtual DOM Diff (Keys): animasiýa. Frontend üçin animasiýaly algoritmler: tertipleme, gözleg, debounce we throttle, event loop, wirtual DOM, keş, trie we ýol gözlegi. Brauzeriňizde çalt, gizlin we ýönekeý.

Ýerliadaty ýagdaýda gizlinÇaltagza bolmak gerek däl

Aşakdaky guralyň düwmeleri we tekstleri heniz iňlis dilinde.

Browser and DOMTime: O(n)Space: O(n)

List before (keys)List after (keys)Matching strategy

<ul>

DOM operations: 0

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Step 1 / 8

Each item has a key. React/Vue use keys to recognise the same item even when it moves, so unchanged DOM nodes are reused.

JavaScript

1function reconcileKeyed(oldList, newList) {
2  const oldPos = new Map(oldList.map((n, i) => [n.key, i]));
3  const newKeys = new Set(newList.map((n) => n.key));
4  let lastIndex = 0;
5  for (const next of newList) {
6    const i = oldPos.get(next.key);
7    if (i === undefined) insert(next);
8    else if (i < lastIndex) move(next);
9    else lastIndex = i;
10  }
11  for (const old of oldList) {
12    if (!newKeys.has(old.key)) remove(old);
13  }
14}

Tip: use the arrow keys to step and the space bar to play or pause.

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