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simple virtual dom

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This commit is contained in:
tsukino
2023-12-26 02:42:26 -08:00
parent a3aec60ad4
commit d76bcec4c9
1 changed files with 8 additions and 7 deletions
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15
packages/web/lib/ui.ts
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@@ -210,10 +210,8 @@ export class VNode {
}
}
if (lastEl.textContent !== newEl.textContent) {
// console.log(lastEl.textContent, newEl.textContent);
// lastEl.textContent = newEl.textContent;
dirty = true;
if (lastEl.tagName === 'TEXT' && newEl.textContent !== lastEl.textContent) {
lastEl.textContent = newEl.textContent;
}
if (dirty) {
@@ -223,13 +221,16 @@ export class VNode {
const maxlength = Math.max(newEl.children.length, lastEl.children.length);
const lastChildren = Array.from(lastEl.children).slice();
const newChildren = Array.from(newEl.children).slice();
for (let i = 0; i < maxlength; i++) {
const lastChild = lastEl.children[i];
const newChild = newEl.children[i];
const lastChild = lastChildren[i];
const newChild = newChildren[i];
if (lastChild && newChild) {
this._patchOne(lastChild, newChild);
} else if (!lastChild && newChild) {
lastEl.append(newChild);
lastEl.appendChild(newChild);
} else if (lastChild && !newChild) {
lastEl.removeChild(lastChild);
}