{"id":53002,"date":"2024-12-03T15:51:26","date_gmt":"2024-12-03T07:51:26","guid":{"rendered":"https:\/\/fwq.ai\/blog\/53002\/"},"modified":"2024-12-03T15:51:26","modified_gmt":"2024-12-03T07:51:26","slug":"vue3-computed%e4%b8%ad%e4%bd%bf%e7%94%a8%e6%95%b0%e7%bb%84%e5%af%bc%e8%87%b4%e6%a0%88%e6%ba%a2%e5%87%ba%ef%bc%9a%e5%a6%82%e4%bd%95%e9%81%bf%e5%85%8d%e7%9b%b8%e4%ba%92%e4%be%9d%e8%b5%96%e7%9a%84","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/53002\/","title":{"rendered":"Vue3 computed\u4e2d\u4f7f\u7528\u6570\u7ec4\u5bfc\u81f4\u6808\u6ea2\u51fa\uff1a\u5982\u4f55\u907f\u514d\u76f8\u4e92\u4f9d\u8d56\u7684\u8ba1\u7b97\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>Vue3 computed\u4e2d\u4f7f\u7528\u6570\u7ec4\u5bfc\u81f4\u6808\u6ea2\u51fa\uff1a\u5982\u4f55\u907f\u514d\u76f8\u4e92\u4f9d\u8d56\u7684\u8ba1\u7b97\uff1f<\/h1>\n<p>\u4ece\u73b0\u5728\u5f00\u59cb\uff0c\u52aa\u529b\u5b66\u4e60\u5427\uff01\u672c\u6587<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300aVue3 computed\u4e2d\u4f7f\u7528\u6570\u7ec4\u5bfc\u81f4\u6808\u6ea2\u51fa\uff1a\u5982\u4f55\u907f\u514d\u76f8\u4e92\u4f9d\u8d56\u7684\u8ba1\u7b97\uff1f\u300b<\/span>\u4e3b\u8981\u8bb2\u89e3\u4e86<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\u76f8\u5173\u77e5\u8bc6\u70b9\uff0c\u6211\u4f1a\u5728\u7c73\u4e91\u4e2d\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u7684\u7cfb\u5217\u6587\u7ae0\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u5e76\u79ef\u6781\u7559\u8a00\u5efa\u8bae\u3002\u4e0b\u9762\u5c31\u5148\u4e00\u8d77\u6765\u770b\u4e00\u4e0b\u672c\u7bc7\u6b63\u6587\u5185\u5bb9\u5427\uff0c\u5e0c\u671b\u80fd\u5e2e\u5230\u4f60\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241125\/173252110667442c924d461.jpg\" class=\"aligncenter\" title=\"Vue3 computed\u4e2d\u4f7f\u7528\u6570\u7ec4\u5bfc\u81f4\u6808\u6ea2\u51fa\uff1a\u5982\u4f55\u907f\u514d\u76f8\u4e92\u4f9d\u8d56\u7684\u8ba1\u7b97\uff1f\u63d2\u56fe\" alt=\"Vue3 computed\u4e2d\u4f7f\u7528\u6570\u7ec4\u5bfc\u81f4\u6808\u6ea2\u51fa\uff1a\u5982\u4f55\u907f\u514d\u76f8\u4e92\u4f9d\u8d56\u7684\u8ba1\u7b97\uff1f\u63d2\u56fe\" \/><\/p>\n<p><strong>vue3 computed\u4e2d\u4f7f\u7528\u6570\u7ec4\u5f15\u53d1\u6808\u6ea2\u51fa<\/strong><\/p>\n<p>\u5728vue3\u4e2d\uff0ccomputed\u5c5e\u6027\u662f\u54cd\u5e94\u6027\u7684\uff0c\u5f53\u4f9d\u8d56\u5b83\u4eec\u7684\u54cd\u5e94\u5f0f\u6570\u636e\u6539\u53d8\u65f6\uff0ccomputed\u5c5e\u6027\u4f1a\u91cd\u65b0\u8ba1\u7b97\u3002<\/p>\n<p>\u5728\u7ed9\u5b9a\u7684\u4ee3\u7801\u4e2d\uff0cmindate\u548cmaxdate\u4e24\u4e2acomputed\u5c5e\u6027\u90fd\u4f9d\u8d56\u4e8eprops.checkdate\u6570\u7ec4\u3002\u6bcf\u5f53props.checkdate\u6570\u7ec4\u53d1\u751f\u53d8\u5316\u65f6\uff0c\u8fd9\u4e24\u4e2a\u5c5e\u6027\u90fd\u4f1a\u91cd\u65b0\u8ba1\u7b97\u3002<\/p>\n<p>\u4e0d\u5e78\u7684\u662f\uff0c\u8fd9\u4e24\u4e2acomputed\u5c5e\u6027\u7684\u8ba1\u7b97\u8fc7\u7a0b\u4f1a\u5bf9props.checkdate\u6570\u7ec4\u8fdb\u884c\u6392\u5e8f\uff0c\u8fd9\u53ef\u80fd\u4f1a\u5bfc\u81f4\u5b83\u4eec\u76f8\u4e92\u89e6\u53d1\u91cd\u65b0\u8ba1\u7b97\uff0c\u4ece\u800c\u5f62\u6210\u65e0\u9650\u5faa\u73af\uff0c\u6700\u7ec8\u5bfc\u81f4\u6808\u6ea2\u51fa\u3002<\/p>\n<p><strong>\u89e3\u51b3\u65b9\u6848<\/strong><\/p>\n<p>\u8981\u89e3\u51b3\u6b64\u95ee\u9898\uff0c\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u54cd\u5e94\u5f0f\u5c5e\u6027\u6765\u5b58\u50a8\u6392\u5e8f\u540e\u7684\u6570\u7ec4\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<pre>const sortedcheckdates = ref([]);<\/pre>\n<p>\u7136\u540e\uff0c\u5728mindate\u548cmaxdate\u7684computed\u5c5e\u6027\u4e2d\uff0c\u4f7f\u7528\u65b0\u5c5e\u6027\u800c\u4e0d\u662f\u5bf9props.checkdate\u6570\u7ec4\u8fdb\u884c\u6392\u5e8f\uff1a<\/p>\n<pre>const mindate = computed(() =&gt; {\n  if (sortedcheckdates.value.length) {\n    return new date(sortedcheckdates.value[0].gettime());\n  } else {\n    return new date();\n  }\n});\n\nconst maxdate = computed(() =&gt; {\n  if (sortedcheckdates.value.length) {\n    return new date(sortedcheckdates.value[sortedcheckdates.value.length - 1].gettime());\n  } else {\n    return new date();\n  }\n});<\/pre>\n<p>\u6700\u540e\uff0c\u5728checkdate\u5c5e\u6027\u53d1\u751f\u53d8\u5316\u65f6\u66f4\u65b0sortedcheckdates\u6570\u7ec4\uff1a<\/p>\n<pre>watch(() =&gt; props.checkDate, (newVal) =&gt; {\n  sortedCheckDates.value = newVal.sort((a, b) =&gt; a.getTime() - b.getTime());\n});<\/pre>\n<p>\u8fd9\u4e9b\u66f4\u6539\u5c06\u963b\u6b62\u76f8\u4e92\u89e6\u53d1\u7684\u65e0\u9650\u5faa\u73af\uff0c\u4ece\u800c\u6d88\u9664\u6808\u6ea2\u51fa\u9519\u8bef\u3002<\/p>\n<p>\u4eca\u5929\u5173\u4e8e\u300aVue3 computed\u4e2d\u4f7f\u7528\u6570\u7ec4\u5bfc\u81f4\u6808\u6ea2\u51fa\uff1a\u5982\u4f55\u907f\u514d\u76f8\u4e92\u4f9d\u8d56\u7684\u8ba1\u7b97\uff1f\u300b\u7684\u5185\u5bb9\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\uff0c\u5982\u679c\u6709\u4ec0\u4e48\u7591\u95ee\u6216\u8005\u5efa\u8bae\uff0c\u53ef\u4ee5\u5728\u7c73\u4e91\u516c\u4f17\u53f7\u4e0b\u591a\u591a\u56de\u590d\u4ea4\u6d41\uff1b\u6587\u4e2d\u82e5\u6709\u4e0d\u6b63\u4e4b\u5904\uff0c\u4e5f\u5e0c\u671b\u56de\u590d\u7559\u8a00\u4ee5\u544a\u77e5\uff01<\/p>\n<dl>\n<dt><\/dt>\n<dd>\n   win11\u8bbe\u7f6e\u9ed8\u8ba4\u5e94\u7528\u4e86\u8fd8\u4f1a\u81ea\u52a8\u5f39\u51fa\u9ed8\u8ba4\u5e94\u7528\u8bbe\u7f6e\u600e\u4e48\u529e\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>Vue3 computed\u4e2d\u4f7f\u7528\u6570\u7ec4\u5bfc\u81f4\u6808\u6ea2\u51fa\uff1a\u5982\u4f55\u907f\u514d\u76f8\u4e92\u4f9d\u8d56\u7684\u8ba1\u7b97\uff1f \u4ece\u73b0\u5728\u5f00\u59cb\uff0c\u52aa\u529b\u5b66\u4e60\u5427\uff01\u672c\u6587\u300aVue3 computed\u4e2d\u4f7f\u7528\u6570\u7ec4\u5bfc\u81f4\u6808\u6ea2\u51fa\uff1a\u5982\u4f55\u907f\u514d\u76f8\u4e92\u4f9d\u8d56\u7684\u8ba1\u7b97\uff1f\u300b\u4e3b\u8981\u8bb2\u89e3\u4e86\u7b49\u7b49\u76f8\u5173\u77e5\u8bc6\u70b9\uff0c\u6211\u4f1a\u5728\u7c73\u4e91\u4e2d\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u7684\u7cfb\u5217\u6587\u7ae0\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u5e76\u79ef\u6781\u7559\u8a00\u5efa\u8bae\u3002\u4e0b\u9762\u5c31\u5148\u4e00\u8d77\u6765\u770b\u4e00\u4e0b\u672c\u7bc7\u6b63\u6587\u5185\u5bb9\u5427\uff0c\u5e0c\u671b\u80fd\u5e2e\u5230\u4f60\uff01 vue3 computed\u4e2d\u4f7f\u7528\u6570\u7ec4\u5f15\u53d1\u6808\u6ea2\u51fa \u5728vue3\u4e2d\uff0ccomputed\u5c5e\u6027\u662f\u54cd\u5e94\u6027\u7684\uff0c\u5f53\u4f9d\u8d56\u5b83\u4eec\u7684\u54cd\u5e94\u5f0f\u6570\u636e\u6539\u53d8\u65f6\uff0ccomputed\u5c5e\u6027\u4f1a\u91cd\u65b0\u8ba1\u7b97\u3002 \u5728\u7ed9\u5b9a\u7684\u4ee3\u7801\u4e2d\uff0cmindate\u548cmaxdate\u4e24\u4e2acomputed\u5c5e\u6027\u90fd\u4f9d\u8d56\u4e8eprops.checkdate\u6570\u7ec4\u3002\u6bcf\u5f53props.checkdate\u6570\u7ec4\u53d1\u751f\u53d8\u5316\u65f6\uff0c\u8fd9\u4e24\u4e2a\u5c5e\u6027\u90fd\u4f1a\u91cd\u65b0\u8ba1\u7b97\u3002 \u4e0d\u5e78\u7684\u662f\uff0c\u8fd9\u4e24\u4e2acomputed\u5c5e\u6027\u7684\u8ba1\u7b97\u8fc7\u7a0b\u4f1a\u5bf9props.checkdate\u6570\u7ec4\u8fdb\u884c\u6392\u5e8f\uff0c\u8fd9\u53ef\u80fd\u4f1a\u5bfc\u81f4\u5b83\u4eec\u76f8\u4e92\u89e6\u53d1\u91cd\u65b0\u8ba1\u7b97\uff0c\u4ece\u800c\u5f62\u6210\u65e0\u9650\u5faa\u73af\uff0c\u6700\u7ec8\u5bfc\u81f4\u6808\u6ea2\u51fa\u3002 \u89e3\u51b3\u65b9\u6848 \u8981\u89e3\u51b3\u6b64\u95ee\u9898\uff0c\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u54cd\u5e94\u5f0f\u5c5e\u6027\u6765\u5b58\u50a8\u6392\u5e8f\u540e\u7684\u6570\u7ec4\uff0c\u5982\u4e0b\u6240\u793a\uff1a const sortedcheckdates = ref([]); \u7136\u540e\uff0c\u5728mindate\u548cmaxdate\u7684computed\u5c5e\u6027\u4e2d\uff0c\u4f7f\u7528\u65b0\u5c5e\u6027\u800c\u4e0d\u662f\u5bf9props.checkdate\u6570\u7ec4\u8fdb\u884c\u6392\u5e8f\uff1a const mindate = computed(() =&gt; { if (sortedcheckdates.value.length) { return new date(sortedcheckdates.value[0].gettime()); } else { return new date(); } }); const maxdate = computed(() =&gt; { if (sortedcheckdates.value.length) { return new date(sortedcheckdates.value[sortedcheckdates.value.length &#8211; 1].gettime()); } else { return new [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-53002","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/53002","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=53002"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/53002\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=53002"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=53002"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=53002"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}