{"id":1547,"date":"2022-09-12T08:54:47","date_gmt":"2022-09-12T00:54:47","guid":{"rendered":"https:\/\/zhuxinyong.com\/?p=1547"},"modified":"2022-09-12T10:13:20","modified_gmt":"2022-09-12T02:13:20","slug":"typescript-object-types","status":"publish","type":"post","link":"https:\/\/zhuxinyong.com\/?p=1547","title":{"rendered":"TypeScript &#8211; Object Types"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/zhuxinyong.com\/wp-content\/uploads\/2022\/09\/object-type.jpeg\" alt=\"object-type\" \/><\/p>\n<p>\u9664\u4e86\u539f\u59cb\u7c7b\u578b\uff0c\u9047\u5230\u6700\u591a\u7684\u5c31\u662f Object \u7c7b\u578b\uff0c\u5b9a\u4e49\u4e00\u4e2a\u5bf9\u8c61\u7c7b\u578b\u5c31\u662f\u5217\u51fa\u5176\u5c5e\u6027\u548c\u503c\uff1a<\/p>\n<pre class=\"line-numbers\"><code class=\"language-plain_text\">function printPoint(point:{x:number, y:number}) {\n  console.log(point.x, point.y);\n}\n<\/code><\/pre>\n<p>\u5bf9\u8c61\u8fd8\u53ef\u4ee5\u6307\u5b9a\u67d0\u4e9b\u5c5e\u6027\u4e3a\u53ef\u9009\uff1a<\/p>\n<pre class=\"line-numbers\"><code class=\"language-plain_text\">function printName(person: { first: string, last?: string }) {\n  \/\/...\n}\n\nprintName({first:'zhangsan'})\nprintName({first:'zhangsan',last:'lisi'})\n<\/code><\/pre>\n<p>\u8fd9\u91cc\u6709\u4e00\u70b9\u9700\u8981\u6ce8\u610f\uff1a<strong>\u5f53\u5bf9\u53ef\u9009\u5c5e\u6027\u64cd\u4f5c\u65f6\uff0c\u9700\u8981\u8fdb\u884c\u5224\u65ad<\/strong>\u3002<\/p>\n<pre class=\"line-numbers\"><code class=\"language-plain_text\">function printName(person: { first: string, last?: string }) {\n  if (person.last !== undefined) {\n    console.log(person.last.toUpperCase());\n  }\n}\n<\/code><\/pre>\n<p>\u53e6\u4e00\u79cd\u65b9\u6cd5\uff1a<\/p>\n<pre class=\"line-numbers\"><code class=\"language-plain_text\">function printName(person: { first: string, last?: string }){\n  console.log(person.last?.toUpperCase())\n}\n<\/code><\/pre>\n<p>\u8fd8\u53ef\u4ee5\u5982\u4e0b\u5b9a\u4e49\u5bf9\u8c61\uff1a<\/p>\n<pre class=\"line-numbers\"><code class=\"language-plain_text\">let p:{\n    first:string,\n    last?:string,\n}\n\np = {\n    first:'zhang',\n    last:'lisi',\n}\n<\/code><\/pre>\n<p>\u82e5\u6b64\u65f6\u6211\u76f4\u63a5\u7ed9 p \u52a0\u4e00\u4e2a\u4e0d\u5b58\u5728\u7684\u5c5e\u6027\uff1a<\/p>\n<pre class=\"line-numbers\"><code class=\"language-plain_text\">p = {\n    first:'zhang',\n    last:'lisi',\n    other:'ooo' \/\/ \u62a5\u9519\uff1a\u4e0d\u5b58\u5728 other \u5c5e\u6027\u3002\n}\n<\/code><\/pre>\n<p>\u89e3\u51b3\u65b9\u6cd5\uff1a<\/p>\n<pre class=\"line-numbers\"><code class=\"language-plain_text\">let p:{\n    first:string,\n    last?:string,\n    [propName:string]:any,\n}\n<\/code><\/pre>\n<p>\u8fd9\u6837\u518d\u6dfb\u52a0\u65b0\u5c5e\u6027\u5c31\u4e0d\u4f1a\u62a5\u9519\u4e86\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u9664\u4e86\u539f\u59cb\u7c7b\u578b\uff0c\u9047\u5230\u6700\u591a\u7684\u5c31\u662f Object \u7c7b\u578b\uff0c\u5b9a\u4e49\u4e00\u4e2a\u5bf9\u8c61\u7c7b\u578b\u5c31\u662f\u5217\u51fa\u5176\u5c5e\u6027\u548c\u503c\uff1a functi&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,20,3],"tags":[221,33],"class_list":["post-1547","post","type-post","status-publish","format-standard","hentry","category-all","category-frontend","category-tech","tag-object-type","tag-typescript"],"_links":{"self":[{"href":"https:\/\/zhuxinyong.com\/index.php?rest_route=\/wp\/v2\/posts\/1547","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zhuxinyong.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zhuxinyong.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zhuxinyong.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/zhuxinyong.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1547"}],"version-history":[{"count":1,"href":"https:\/\/zhuxinyong.com\/index.php?rest_route=\/wp\/v2\/posts\/1547\/revisions"}],"predecessor-version":[{"id":1548,"href":"https:\/\/zhuxinyong.com\/index.php?rest_route=\/wp\/v2\/posts\/1547\/revisions\/1548"}],"wp:attachment":[{"href":"https:\/\/zhuxinyong.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1547"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zhuxinyong.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1547"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zhuxinyong.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1547"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}