![\"\u5b57\u6bb5\u7ea7\u66f4\u65b0\u4e0e\u516c\u5171\u63a5\u53e3\u8fb9\u754c\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/11\/20261101200905-6ae79c61d46c6.png\")
<\/p>\n<\/p>\n
\u4e00\u5f20\u957f\u8868\u5355\u91cc\u53ea\u6539\u4e86\u57ce\u5e02\u5b57\u6bb5，\u5374\u8fde\u5e26\u89e6\u53d1\u4e86\u6574\u9875\u8ba1\u7b97\u3002\u6b64\u65f6\u503c\u5f97\u67e5\u7684\u662f\u4f9d\u8d56\u5173\u7cfb\u3001\u7ec4\u4ef6\u8fb9\u754c\u548c\u9a8c\u8bc1\u8303\u56f4，\u800c\u4e0d\u662f\u5148\u7ed9\u6846\u67b6\u5224\u4e00\u4e2a\u201c\u6bcf\u6b21\u5fc5\u626b\u5168\u6811\u201d\u7684\u7f6a\u540d\u3002\u865a\u62df DOM \u5e94\u7528\u80fd\u901a\u8fc7\u5408\u7406\u8fb9\u754c\u51cf\u5c11\u5de5\u4f5c，\u539f\u751f DOM \u4e5f\u4f1a\u88ab\u6602\u8d35\u7684\u4e1a\u52a1\u903b\u8f91\u62d6\u6162\u3002<\/p>\n
Vue \u5728 2026 \u5e74 10 \u6708 23 \u65e5\u53d1\u5e03\u4e86 v3.6.0-rc.13\u3002\u8fd9\u662f\u9884\u53d1\u5e03\u7248\u672c\u3002\u67e5\u770b\u8be5\u6807\u7b7e\u7684\u5305\u5bfc\u51fa\u4e0e runtime-vapor \u6e90\u7801\u540e，\u4e0d\u80fd\u628a\u81ea\u521b\u7684 createSignal\u3001Signal.set \u6216 vue\/vapor \u8def\u5f84\u5f53\u6210\u5df2\u7ecf\u53ef\u7528\u7684\u516c\u5171\u627f\u8bfa；\u7f16\u8bd1\u5668\u4f7f\u7528\u7684\u8f85\u52a9\u51fd\u6570，\u4e5f\u4e0d\u7b49\u4e8e\u4e1a\u52a1\u5c42\u5e94\u8be5\u624b\u5de5\u62fc\u63a5\u7684\u63a5\u53e3\u3002<\/p>\n
\u4e0b\u9762\u4e0d\u662f Vapor \u7684\u66ff\u4ee3\u5b9e\u73b0，\u4e5f\u4e0d\u662f Vue \u8dd1\u5206\u3002\u5b83\u53ea\u6f14\u793a\u201c\u5b57\u6bb5\u8ba2\u9605\u8005\u53ea\u63a5\u6536\u81ea\u5df1\u5b57\u6bb5\u7684\u53d8\u5316\u201d\u3002\u771f\u5b9e\u754c\u9762\u53ef\u4ee5\u628a\u8ba2\u9605\u56de\u8c03\u63a5\u5230\u9002\u5f53\u7684\u7ec4\u4ef6\u72b6\u6001\u6216 DOM \u9002\u914d\u5c42\u3002<\/p>\n
![\"\u5b57\u6bb5\u8ba2\u9605\u4e0e\u53d6\u6d88\u8ba2\u9605\u7684\u8fb9\u754c\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/11\/20261101200907-6ae79c639f685.png\")
<\/p>\n
import assert from 'node:assert\/strict';
\nfunction createFields(initial) {
\n const values = new Map(Object.entries(initial));
\n const listeners = new Map();
\n return {
\n get(id) { if (!values.has(id)) throw new Error('unknown field'); return values.get(id); },
\n set(id, value) {
\n if (!values.has(id)) throw new Error('unknown field');
\n if (Object.is(values.get(id), value)) return;
\n values.set(id, value);
\n for (const subscription of […(listeners.get(id) ?? [])]) {
\n if (subscription.active) subscription.notify(value);
\n }
\n },
\n subscribe(id, cb) {
\n if (!values.has(id)) throw new Error('unknown field');
\n if (typeof cb !== 'function') throw new TypeError('listener must be a function');
\n const group = listeners.get(id) ?? new Set();
\n const subscription = { notify: cb, active: true };
\n listeners.set(id, group); group.add(subscription);
\n return () => {
\n if (!subscription.active) return;
\n subscription.active = false;
\n group.delete(subscription);
\n if (!group.size && listeners.get(id) === group) listeners.delete(id);
\n };
\n }
\n };
\n}
\nconst fields = createFields({city:'\u676d\u5dde', taxId:''});
\nconst cityEvents = [], taxEvents = [];
\nconst stop = fields.subscribe('city', v => cityEvents.push(v));
\nconst stopTax = fields.subscribe('taxId', v => taxEvents.push(v));
\nfields.set('city', '\u82cf\u5dde');
\nfields.set('city', '\u82cf\u5dde');
\nassert.deepEqual(cityEvents, ['\u82cf\u5dde']);
\nassert.deepEqual(taxEvents, []);
\nstop(); fields.set('city', '\u5b81\u6ce2');
\nassert.equal(cityEvents.length, 1);
\nassert.throws(() => fields.set('missing', 1), \/unknown\/);
\nassert.throws(() => fields.subscribe('missing', () => {}), \/unknown\/);
\nassert.throws(() => fields.subscribe('city', null), \/listener\/);
\nstopTax(); fields.set('taxId', 'new');
\nassert.deepEqual(taxEvents, []);<\/p>\n
\/\/ An old cleanup must not remove a newly created subscription group.
\nconst remounted = createFields({ x: 0 });
\nlet freshEvents = 0;
\nconst oldStop = remounted.subscribe('x', () => {});
\noldStop();
\nconst freshStop = remounted.subscribe('x', () => freshEvents++);
\noldStop(); remounted.set('x', 1);
\nassert.equal(freshEvents, 1);
\nfreshStop(); freshStop(); remounted.set('x', 2);
\nassert.equal(freshEvents, 1);<\/p>\n
\/\/ Each subscribe call has its own lifetime, even for the same callback.
\nconst duplicated = createFields({ x: 0 });
\nlet duplicateCalls = 0;
\nconst callback = () => duplicateCalls++;
\nconst stopA = duplicated.subscribe('x', callback);
\nconst stopB = duplicated.subscribe('x', callback);
\nduplicated.set('x', 1); assert.equal(duplicateCalls, 2);
\nstopA(); duplicated.set('x', 2); assert.equal(duplicateCalls, 3);
\nstopA(); duplicated.set('x', 3); assert.equal(duplicateCalls, 4);
\nstopB(); duplicated.set('x', 4); assert.equal(duplicateCalls, 4);<\/p>\n
\/\/ Removal takes effect during dispatch; additions wait for the next change.
\nconst lifecycle = createFields({ x: 0 });
\nconst order = [];
\nlet stopLate, stopAdded;
\nconst stopEarly = lifecycle.subscribe('x', () => {
\n order.push('first');
\n stopLate();
\n if (!stopAdded) stopAdded = lifecycle.subscribe('x', () => order.push('added'));
\n});
\nstopLate = lifecycle.subscribe('x', () => order.push('late'));
\nlifecycle.set('x', 1); assert.deepEqual(order, ['first']);
\nlifecycle.set('x', 2); assert.deepEqual(order, ['first', 'first', 'added']);
\nstopEarly(); stopEarly(); stopAdded(); lifecycle.set('x', 3);
\nassert.deepEqual(order, ['first', 'first', 'added']);
\nconsole.log('field isolation, idempotent cleanup and dispatch lifetime checks passed');<\/p>\n
\u6bcf\u6b21\u8ba2\u9605\u90fd\u6709\u72ec\u7acb\u8bb0\u5f55\u3002\u5373\u4f7f\u4e24\u6b21\u4f20\u5165\u540c\u4e00\u4e2a\u56de\u8c03，\u4e24\u4e2a\u6e05\u7406\u53e5\u67c4\u4e5f\u4e92\u4e0d\u5f71\u54cd\u3002\u7ec4\u4ef6\u9500\u6bc1\u65f6\u5e94\u8c03\u7528\u5bf9\u5e94\u7684\u6e05\u7406\u51fd\u6570；\u91cd\u590d\u6e05\u7406\u53ef\u4ee5\u5b89\u5168\u8fd4\u56de，\u65e7\u53e5\u67c4\u4e0d\u80fd\u5220\u9664\u91cd\u65b0\u6302\u8f7d\u540e\u5efa\u7acb\u7684\u65b0\u96c6\u5408\u3002<\/p>\n
\u901a\u77e5\u65f6\u5148\u53d6\u8ba2\u9605\u5feb\u7167，\u518d\u68c0\u67e5\u8bb0\u5f55\u662f\u5426\u4ecd\u7136\u6709\u6548\u3002\u56e0\u6b64，\u6d3e\u53d1\u9014\u4e2d\u89e3\u7ed1\u7684\u56de\u8c03\u4f1a\u88ab\u8df3\u8fc7，\u9014\u4e2d\u65b0\u589e\u7684\u8ba2\u9605\u4ece\u4e0b\u4e00\u6b21\u5b57\u6bb5\u53d8\u66f4\u5f00\u59cb\u53c2\u4e0e\u3002\u8fd9\u6837\u65e2\u4fdd\u7559\u7a33\u5b9a\u7684\u901a\u77e5\u8303\u56f4，\u4e5f\u8ba9\u751f\u547d\u5468\u671f\u64cd\u4f5c\u7acb\u5373\u751f\u6548\u3002<\/p>\n
\u8fd9\u6bb5\u6a21\u578b\u523b\u610f\u6ca1\u6709\u89e3\u51b3\u6d3e\u751f\u5b57\u6bb5\u3002\u82e5\u201c\u7701\u4efd\u53d8\u5316\u540e\u57ce\u5e02\u5931\u6548\u201d，\u5c31\u8981\u663e\u5f0f\u5efa\u7acb\u4f9d\u8d56，\u628a\u9700\u8981\u91cd\u7b97\u7684\u5b50\u56fe\u4ea4\u7ed9\u89c4\u5219\u5f15\u64ce；\u4e0d\u80fd\u4e3a\u4e86\u8ffd\u6c42\u5c40\u90e8\u66f4\u65b0，\u8ba9\u65e7\u57ce\u5e02\u503c\u6084\u6084\u7559\u5728\u63d0\u4ea4\u7ed3\u679c\u91cc\u3002\u56de\u8c03\u629b\u5f02\u5e38\u3001\u9012\u5f52\u5199\u5165\u3001\u6279\u91cf\u63d0\u4ea4\u548c\u64a4\u9500\u540c\u6837\u9700\u8981\u989d\u5916\u8c03\u5ea6\u7b56\u7565\u3002<\/p>\n
\u7b2c\u4e00\u4efd\u662f\u63a5\u53e3\u8bc1\u636e：\u9501\u5b9a\u7248\u672c\u3001\u901a\u8fc7\u516c\u5f00\u5165\u53e3\u6784\u5efa\u3001\u6309\u8be5\u7248\u672c\u7684\u7f16\u8bd1\u7ea6\u5b9a\u751f\u6210\u7ec4\u4ef6\u3002\u7b2c\u4e8c\u4efd\u662f\u9875\u9762\u8bc1\u636e：\u540c\u4e00\u6570\u636e\u3001\u540c\u4e00\u8bbe\u5907\u4e0e\u8f93\u5165\u52a8\u4f5c，\u8bb0\u5f55\u811a\u672c\u3001\u5e03\u5c40\u3001\u7ed8\u5236\u3001\u5185\u5b58\u53ca\u8f93\u5165\u6cd5\u7ec4\u5408\u4e8b\u4ef6\u3002\u53ea\u8ba1\u4e00\u6b21\u8d4b\u503c\u8017\u65f6，\u65e0\u6cd5\u56de\u7b54\u7528\u6237\u8f93\u5165\u662f\u5426\u987a\u7545\u3002<\/p>\n
\u5982\u679c\u73b0\u6709\u9875\u9762\u6162\u5728\u5168\u8868\u6821\u9a8c\u3001\u91cd\u590d\u8bf7\u6c42\u6216\u5927\u9762\u79ef\u5e03\u5c40\u5931\u6548，\u5207\u6362\u6e32\u67d3\u6a21\u5f0f\u4e5f\u53ef\u80fd\u6cbb\u4e0d\u5230\u95ee\u9898\u3002\u5e94\u5148\u7528 DevTools Performance\u5b9a\u4f4d，\u518d\u51b3\u5b9a\u662f\u5426\u503c\u5f97\u8fc1\u79fb\u3002<\/p>\n
\u672c\u4f8b\u53ea\u5728 Node \u4e2d\u9a8c\u8bc1\u8ba2\u9605\u9694\u79bb\u4e0e\u6e05\u7406，\u672a\u5b89\u88c5 Vue\u3001\u672a\u6784\u5efa Vapor \u7ec4\u4ef6\u3001\u672a\u505a\u6d4f\u89c8\u5668\u6027\u80fd\u5bf9\u6bd4\u3002\u6ca1\u6709\u771f\u5b9e\u6d4b\u91cf，\u5c31\u4e0d\u5199\u201c\u5feb\u4e86\u82e5\u5e72\u500d\u201d\u3002\u9884\u53d1\u5e03\u503c\u5f97\u8bd5\u9a8c，\u8bd5\u9a8c\u4e5f\u5e94\u8be5\u7559\u4e0b\u53ef\u56de\u9000\u7684\u8fb9\u754c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4e00\u5f20\u957f\u8868\u5355\u91cc\u53ea\u6539\u4e86\u57ce\u5e02\u5b57\u6bb5，\u5374\u8fde\u5e26\u89e6\u53d1\u4e86\u6574\u9875\u8ba1\u7b97\u3002\u6b64\u65f6\u503c\u5f97\u67e5\u7684\u662f\u4f9d\u8d56\u5173\u7cfb\u3001\u7ec4\u4ef6\u8fb9\u754c\u548c\u9a8c\u8bc1\u8303\u56f4，\u800c\u4e0d\u662f\u5148\u7ed9\u6846\u67b6\u5224\u4e00\u4e2a\u201c\u6bcf\u6b21\u5fc5\u626b\u5168\u6811\u201d\u7684\u7f6a\u540d\u3002\u865a\u62df DOM \u5e94\u7528\u80fd\u901a\u8fc7\u5408\u7406\u8fb9\u754c\u51cf\u5c11\u5de5\u4f5c，\u539f\u751f DOM \u4e5f\u4f1a\u88ab\u6602\u8d35\u7684\u4e1a\u52a1\u903b\u8f91\u62d6\u6162\u3002
\nVue \u5728 2026 \u5e74 10 \u6708 23 \u65e5\u53d1\u5e03\u4e86 v3.6.0-rc.13\u3002\u8fd9\u662f\u9884\u53d1\u5e03\u7248\u672c\u3002\u67e5\u770b\u8be5\u6807\u7b7e\u7684\u5305\u5bfc\u51fa\u4e0e runtime-vapor \u6e90\u7801\u540e，\u4e0d\u80fd\u628a\u81ea\u521b\u7684 createSignal\u3001Sign<\/p>\n","protected":false},"author":2,"featured_media":121124,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[13849,13848,13851,13850,13852],"topic":[],"class_list":["post-121126","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-vapor-","tag-vue-3-6","tag-13851","tag-13850","tag-13852"],"yoast_head":"\n