{"id":5961,"date":"2025-06-11T09:52:15","date_gmt":"2025-06-17T02:20:14","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=5961"},"modified":"2025-06-17T09:52:15","modified_gmt":"2025-06-17T02:20:14","slug":"%e5%ad%b8%e7%bf%92%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8vue-js%e4%b8%ad%e7%9a%84%e8%a8%88%e7%ae%97%e5%b1%ac%e6%80%a7setter%e5%92%8cgetter","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/vue-js\/%e5%ad%b8%e7%bf%92%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8vue-js%e4%b8%ad%e7%9a%84%e8%a8%88%e7%ae%97%e5%b1%ac%e6%80%a7setter%e5%92%8cgetter\/","title":{"rendered":"\u6df1\u5165\u5b78\u7fd2 Vue 3 \u7684\u8a08\u7b97\u5c6c\u6027\uff1a\u5982\u4f55\u904b\u7528 Getter \u548c Setter \u4f86\u7cbe\u7d30\u63a7\u5236\u8cc7\u6599\u6d41"},"content":{"rendered":"<p><meta name=\"keywords\" content=\"Vue 3, \u8a08\u7b97\u5c6c\u6027, setter, getter, Vue.js \u6559\u5b78\"><\/p>\n<p>Vue.js \u662f\u4e00\u500b\u5f37\u5927\u7684 JavaScript 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\u4e2d\u4e00\u7a2e\u7279\u6b8a\u7684\u5c6c\u6027\uff0c\u5b83\u5141\u8a31\u958b\u767c\u8005\u5c07\u8cc7\u6599\u7d81\u5b9a\u5230\u61c9\u7528\u7a0b\u5f0f\u4e2d\u7684\u67d0\u500b\u5143\u4ef6\uff0c\u4e26\u5728\u8cc7\u6599\u6539\u8b8a\u6642\u81ea\u52d5\u66f4\u65b0\u5143\u4ef6\u3002\u9019\u4f7f\u5f97\u8cc7\u6599\u6d41\u52d5\u66f4\u70ba\u76f4\u89c0\u548c\u9ad8\u6548\u3002\u8a08\u7b97\u5c6c\u6027\u53ef\u4f7f\u7528 setter \u548c getter\uff0c\u8b93\u958b\u767c\u8005\u80fd\u9748\u6d3b\u63a7\u5236\u8cc7\u6599\u7684\u8b80\u53d6\u548c\u5beb\u5165\u3002<\/p>\n<h2>\u5728 Vue 3 \u4e2d\u4f7f\u7528\u8a08\u7b97\u5c6c\u6027\u7684 Getter \u548c Setter<\/h2>\n<p>\u5728 Vue 3 \u4e2d\uff0c\u4f7f\u7528\u8a08\u7b97\u5c6c\u6027\u7684 getter \u548c setter \u8b8a\u5f97\u66f4\u70ba\u7c21\u55ae\u3002\u4ee5\u4e0b\u7bc4\u4f8b\u986f\u793a\u4e86\u5982\u4f55\u5b9a\u7fa9\u8a08\u7b97\u5c6c\u6027\u4e26\u6dfb\u52a0 getter \u548c setter\uff1a<\/p>\n<pre><code class=\"language-javascript\">\n\/\/ \u5b9a\u7fa9\u4e00\u500b Vue 3 \u7684\u8a08\u7b97\u5c6c\u6027\nimport { ref, computed } from 'vue';\n\nexport default {\n  setup() {\n    const data = ref(0);\n\n    const myValue = computed({\n      get: () => data.value,\n      set: (value) => {\n        data.value = value;\n      }\n    });\n\n    return { myValue };\n  }\n};\n<\/pre>\n<p>\u5728\u9019\u6bb5\u7a0b\u5f0f\u78bc\u4e2d\uff0c\u6211\u5011\u4f7f\u7528 Vue 3 \u7684 `ref` \u4f86\u5b9a\u7fa9\u4e00\u500b\u97ff\u61c9\u5f0f\u8b8a\u6578 `data`\uff0c\u4e26\u900f\u904e `computed` \u5b9a\u7fa9\u8a08\u7b97\u5c6c\u6027 `myValue`\uff0c\u540c\u6642\u5be6\u4f5c\u4e86 getter \u548c setter\u3002\u5728 setter \u4e2d\uff0c\u5c07\u50b3\u5165\u7684\u503c\u8a2d\u5b9a\u70ba `data`\uff0c\u800c\u5728 getter \u4e2d\uff0c\u76f4\u63a5\u8fd4\u56de `data` \u7684\u503c\u3002<\/p>\n<h2>\u76e3\u807d\u8a08\u7b97\u5c6c\u6027\u7684\u8b8a\u5316<\/h2>\n<p>Vue.js \u63d0\u4f9b\u4e86 `watch` API \u53ef\u4ee5\u76e3\u807d\u8a08\u7b97\u5c6c\u6027\u7684\u8b8a\u5316\uff0c\u7576\u8cc7\u6599\u6539\u8b8a\u6642\u53ef\u4ee5\u57f7\u884c\u7279\u5b9a\u64cd\u4f5c\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528 `watch` \u76e3\u807d\u8a08\u7b97\u5c6c\u6027\u7684\u7bc4\u4f8b\uff1a<\/p>\n<pre><code class=\"language-javascript\">\nimport { watch } from 'vue';\n\nwatch(myValue, (newValue, oldValue) => {\n  console.log(`myValue \u5f9e <span class=\"katex math inline\">{oldValue} \u8b8a\u66f4\u70ba<\/span>{newValue}`);\n});\n<\/pre>\n<p>\u5728\u9019\u6bb5\u7a0b\u5f0f\u78bc\u4e2d\uff0c`watch` \u76e3\u807d `myValue` \u7684\u8b8a\u5316\uff0c\u4e26\u5728\u503c\u6539\u8b8a\u6642\u8f38\u51fa\u820a\u503c\u548c\u65b0\u503c\u3002<\/p>\n<h2>\u932f\u8aa4\u6392\u9664\u8207\u6700\u4f73\u5be6\u8e10<\/h2>\n<p>\u5728\u4f7f\u7528\u8a08\u7b97\u5c6c\u6027\u6642\uff0c\u53ef\u80fd\u6703\u9047\u5230\u4e00\u4e9b\u5e38\u898b\u932f\u8aa4\uff0c\u4f8b\u5982\u6c92\u6709\u6b63\u78ba\u8a2d\u7f6e getter \u548c setter\uff0c\u6216\u662f\u5728\u8a08\u7b97\u5c6c\u6027\u5167\u90e8\u57f7\u884c\u4e86\u4e0d\u5fc5\u8981\u7684\u526f\u4f5c\u7528\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u6700\u4f73\u5be6\u8e10\uff1a<\/p>\n<p>1. **\u907f\u514d\u526f\u4f5c\u7528**\uff1a\u8a08\u7b97\u5c6c\u6027\u61c9\u8a72\u662f\u7d14\u7cb9\u7684\uff0c\u907f\u514d\u5728\u5176\u5167\u90e8\u4fee\u6539\u5916\u90e8\u72c0\u614b\u3002<br \/>\n2. **\u4f7f\u7528 `watch` \u9032\u884c\u526f\u4f5c\u7528\u8655\u7406**\uff1a\u7576\u9700\u8981\u5c0d\u8cc7\u6599\u8b8a\u66f4\u9032\u884c\u526f\u4f5c\u7528\u64cd\u4f5c\u6642\uff0c\u61c9\u4f7f\u7528 `watch` API\u3002<br \/>\n3. **\u512a\u5316\u6027\u80fd**\uff1a\u8a08\u7b97\u5c6c\u6027\u6703\u6839\u64da\u5176\u4f9d\u8cf4\u7684\u97ff\u61c9\u5f0f\u8cc7\u6599\u81ea\u52d5\u66f4\u65b0\uff0c\u78ba\u4fdd\u4f9d\u8cf4\u9805\u662f\u5fc5\u8981\u7684\uff0c\u4ee5\u512a\u5316\u6027\u80fd\u3002<\/p>\n<h2>\u7d50\u8ad6<\/h2>\n<p>\u5728\u672c\u6587\u4e2d\uff0c\u6211\u5011\u8a73\u7d30\u4ecb\u7d39\u4e86\u5982\u4f55\u5728 Vue 3 \u4e2d\u4f7f\u7528\u8a08\u7b97\u5c6c\u6027\u7684 getter \u548c setter\u3002\u6211\u5011\u53ef\u4ee5\u5229\u7528\u9019\u4e9b\u529f\u80fd\u7cbe\u7d30\u63a7\u5236\u8cc7\u6599\u7684\u6d41\u52d5\uff0c\u4e26\u4f7f\u7528 `watch` API \u76e3\u807d\u8cc7\u6599\u8b8a\u5316\uff0c\u57f7\u884c\u76f8\u61c9\u7684\u64cd\u4f5c\u3002\u9019\u6a23\u7684\u5be6\u8e10\u5c07\u4f7f\u60a8\u7684 Vue \u61c9\u7528\u7a0b\u5f0f\u66f4\u52a0\u9ad8\u6548\u548c\u53ef\u7dad\u8b77\u3002<\/p>\n<h2>Q&A\uff08\u5e38\u898b\u554f\u984c\u89e3\u7b54\uff09<\/h2>\n<h3>Q1: \u8a08\u7b97\u5c6c\u6027\u548c\u65b9\u6cd5\u6709\u4ec0\u9ebc\u4e0d\u540c\uff1f<\/h3>\n<p>A1: \u8a08\u7b97\u5c6c\u6027\u662f\u57fa\u65bc\u5176\u4f9d\u8cf4\u7684\u97ff\u61c9\u5f0f\u8cc7\u6599\u81ea\u52d5\u8a08\u7b97\u7684\uff0c\u4e26\u4e14\u6703\u5feb\u53d6\u7d50\u679c\uff0c\u800c\u65b9\u6cd5\u5247\u6bcf\u6b21\u8abf\u7528\u6642\u90fd\u6703\u57f7\u884c\uff0c\u7121\u6cd5\u5feb\u53d6\u3002<\/p>\n<h3>Q2: \u5982\u4f55\u5728\u8a08\u7b97\u5c6c\u6027\u4e2d\u4f7f\u7528\u975e\u97ff\u61c9\u5f0f\u8cc7\u6599\uff1f<\/h3>\n<p>A2: \u53ef\u4ee5\u5728\u8a08\u7b97\u5c6c\u6027\u5167\u90e8\u4f7f\u7528\u975e\u97ff\u61c9\u5f0f\u8cc7\u6599\uff0c\u4f46\u8981\u6ce8\u610f\u9019\u6a23\u505a\u4e0d\u6703\u8b93\u8a08\u7b97\u5c6c\u6027\u81ea\u52d5\u66f4\u65b0\uff0c\u9700\u8b39\u614e\u4f7f\u7528\u3002<\/p>\n<h3>Q3: \u8a08\u7b97\u5c6c\u6027\u53ef\u4ee5\u6709\u7570\u6b65\u64cd\u4f5c\u55ce\uff1f<\/h3>\n<p>A3: \u4e0d\u53ef\u4ee5\uff0c\u8a08\u7b97\u5c6c\u6027\u61c9\u8a72\u662f\u540c\u6b65\u7684\u3002\u5982\u679c\u9700\u8981\u7570\u6b65\u8655\u7406\uff0c\u61c9\u4f7f\u7528\u65b9\u6cd5\u6216 `watch`\u3002<\/p>\n<p>---<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6458\u8981\uff1aVue.js\u4e2d\u7684\u8a08\u7b97\u5c6c\u6027Setter\u548cGetter\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u66f4\u6709\u6548\u7387\u5730\u64cd\u4f5c\u8cc7\u6599\uff0c\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528Vue.js\u4e2d\u7684\u8a08\u7b97\u5c6c\u6027Setter\u548cGetter\uff0c\u4ee5\u53ca\u5b83\u5011\u7684\u512a\u9ede\u548c\u7f3a\u9ede\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[180,179],"tags":[178,177],"class_list":["post-5961","post","type-post","status-publish","format-standard","hentry","category-vue","category-vue-js","tag-vue","tag-vue-js"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack-related-posts":[],"jetpack_shortlink":"https:\/\/wp.me\/pcFK27-1y9","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5961","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/comments?post=5961"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5961\/revisions"}],"predecessor-version":[{"id":5962,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5961\/revisions\/5962"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=5961"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=5961"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=5961"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}