{"id":936,"date":"2022-03-02T14:14:00","date_gmt":"2022-03-02T06:14:00","guid":{"rendered":"http:\/\/blog.xrhoujie.com\/?p=936"},"modified":"2022-03-16T14:23:54","modified_gmt":"2022-03-16T06:23:54","slug":"vue%e7%94%9f%e5%91%bd%e5%91%a8%e6%9c%9f%e7%af%87-computed%e5%ad%a6%e4%b9%a0%e7%ac%94%e8%ae%b0","status":"publish","type":"post","link":"http:\/\/blog.xrhoujie.com\/?p=936","title":{"rendered":"Vue\u751f\u547d\u5468\u671f\u7bc7-Computed(\u5b66\u4e60\u7b14\u8bb0)"},"content":{"rendered":"\n<p>computed() \u8ba1\u7b97\u5c5e\u6027\uff1a <\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>1.\u5b9a\u4e49\uff1a\u8981\u7528\u7684\u5c5e\u6027\u4e0d\u5b58\u5728\uff0c\u8981\u901a\u8fc7\u5df2\u6709\u5c5e\u6027\u8ba1\u7b97\u5f97\u6765\u3002 <\/p>\n\n\n\n<p>2.\u539f\u7406\uff1a\u5e95\u5c42\u501f\u52a9\u4e86Objcet.defineproperty\u65b9\u6cd5\u63d0\u4f9b\u7684getter\u548csetter\u3002<\/p>\n\n\n\n<p> 3.get\u51fd\u6570\u4ec0\u4e48\u65f6\u5019\u6267\u884c\uff1f<\/p>\n\n\n\n<p> (1).\u521d\u6b21\u8bfb\u53d6\u65f6\u4f1a\u6267\u884c\u4e00\u6b21\u3002<\/p>\n\n\n\n<p> (2).\u5f53\u4f9d\u8d56\u7684\u6570\u636e\u53d1\u751f\u6539\u53d8\u65f6\u4f1a\u88ab\u518d\u6b21\u8c03\u7528\u3002 <\/p>\n\n\n\n<p>4.\u4f18\u52bf\uff1a\u4e0emethods\u5b9e\u73b0\u76f8\u6bd4\uff0c\u5185\u90e8\u6709\u7f13\u5b58\u673a\u5236\uff08\u590d\u7528\uff09\uff0c\u6548\u7387\u66f4\u9ad8\uff0c\u8c03\u8bd5\u65b9\u4fbf\u3002<\/p>\n\n\n\n<p> 5.\u5907\u6ce8\uff1a<\/p>\n\n\n\n<p> 1.\u8ba1\u7b97\u5c5e\u6027\u6700\u7ec8\u4f1a\u51fa\u73b0\u5728vm\u4e0a\uff0c\u76f4\u63a5\u8bfb\u53d6\u4f7f\u7528\u5373\u53ef\u3002 <\/p>\n\n\n\n<p>2.\u5982\u679c\u8ba1\u7b97\u5c5e\u6027\u8981\u88ab\u4fee\u6539\uff0c\u90a3\u5fc5\u987b\u5199set\u51fd\u6570\u53bb\u54cd\u5e94\u4fee\u6539\uff0c\u4e14set\u4e2d\u8981\u5f15\u8d77\u8ba1\u7b97\u65f6\u4f9d\u8d56\u7684\u6570\u636e\u53d1\u751f\u6539\u53d8\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>computed:{\n                \/\/\u5b8c\u6574\u5199\u6cd5\n                \/* fullName:{\n                    get(){\n                        console.log('get\u88ab\u8c03\u7528\u4e86')\n                        return this.firstName + '-' + this.lastName\n                    },\n                    set(value){\n                        console.log('set',value)\n                        const arr = value.split('-')\n                        this.firstName = arr&#91;0]\n                        this.lastName = arr&#91;1]\n                    }\n                } *\/\n                \/\/\u7b80\u5199\n                fullName(){\n                    console.log('get\u88ab\u8c03\u7528\u4e86')\n                    return this.firstName + '-' + this.lastName\n                }\n            }<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>computed() \u8ba1\u7b97\u5c5e\u6027\uff1a 1.\u5b9a\u4e49\uff1a\u8981\u7528\u7684\u5c5e\u6027\u4e0d\u5b58\u5728\uff0c\u8981\u901a\u8fc7\u5df2\u6709\u5c5e\u6027\u8ba1\u7b97\u5f97\u6765\u3002 2.\u539f\u7406\uff1a\u5e95\u5c42\u501f\u52a9\u4e86O [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[41,1],"tags":[38],"_links":{"self":[{"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=\/wp\/v2\/posts\/936"}],"collection":[{"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=936"}],"version-history":[{"count":2,"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=\/wp\/v2\/posts\/936\/revisions"}],"predecessor-version":[{"id":947,"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=\/wp\/v2\/posts\/936\/revisions\/947"}],"wp:attachment":[{"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=936"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=936"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=936"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}