{"id":71,"date":"2016-10-19T13:54:47","date_gmt":"2016-10-19T05:54:47","guid":{"rendered":"http:\/\/blog.xrhoujie.com\/?p=71"},"modified":"2021-10-19T10:36:15","modified_gmt":"2021-10-19T02:36:15","slug":"typescript%ef%bc%8d%e6%b7%b1%e5%85%a5%e7%90%86%e8%a7%a3set%e4%b8%8eget%e7%9a%84%e5%ad%98%e5%8f%96%e6%9c%ba%e5%88%b6","status":"publish","type":"post","link":"http:\/\/blog.xrhoujie.com\/?p=71","title":{"rendered":"TypeScript\uff0d\u6df1\u5165\u7406\u89e3set\u4e0eget\u7684\u5b58\u53d6\u673a\u5236"},"content":{"rendered":"<p>\u5404\u4f4d\u8001\u54e5\u5750\u7a33\u4e86 \u54b1\u4eec\u73b0\u5728\u5c31\u53d1\u8f66\uff0c<\/p>\n<p>\u6211\u4eec\u5148\u6765\u770b\u770bset\u548cget\u8fd9\u4e24\u4e2a\u8bcd\u7684\u8868\u9762\u610f\u601d\uff0cset\u662f\u8bbe\u7f6e\u7684\u610f\u601d\uff0c\u800cget\u662f\u83b7\u53d6\u7684\u610f\u601d\uff0c\u987e\u540d\u601d\u4e49\uff0c\u8fd9\u4e24\u4e2a\u65b9\u6cd5\u662f\u5bf9\u6570\u636e\u8fdb\u884c\u8bbe\u7f6e\u548c\u83b7\u53d6\u7528\u7684\u3002\u800c\u4e14\uff0c\u5728\u7c7b\u4e2d\u4f7f\u7528set\u548cget\u65b9\u6cd5\u65f6\uff0c\u90fd\u662f\u5728set\u548cget\u540e\u9762\u8ddf\u4e0a\u4e00\u4e9b\u7279\u5b9a\u7684\u8bcd\u6765\u5f62\u6210\u7279\u5b9a\u610f\u601d\u7684\u65b9\u6cd5\u540d\uff0c\u6bd4\u5982setage\uff08\uff09\u548cgetage\uff08\uff09\uff0c\u8868\u793a\u8bbe\u7f6e\u5e74\u9f84\u548c\u83b7\u53d6\u5e74\u9f84\u3002<\/p>\n<p>typescript\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b\u4e2d\u7684\u5c01\u95ed\u6027\u548c\u5b89\u5168\u6027\u3002<\/p>\n<p>\u5c01\u95ed\u6027\u5373\u5bf9\u7c7b\u4e2d\u7684\u57df\u53d8\u91cf\u8fdb\u884c\u5c01\u95ed\u64cd\u4f5c\uff0c\u5373\u7528private\u6765\u4fee\u9970\u4ed6\u4eec\uff0c\u5982\u6b64\u4e00\u6765\u5176\u4ed6\u7c7b\u5219\u4e0d\u80fd\u5bf9\u8be5\u53d8\u91cf\u8bbf\u95ee\u3002<\/p>\n<p>\u8fd9\u6837\u6211\u4eec\u5c31\u5c06\u8fd9\u4e9b\u53d8\u91cf\u5c01\u95ed\u5728\u4e86\u7c7b\u5185\u90e8\uff0c\u8fd9\u6837\u5c31\u63d0\u9ad8\u4e86\u6570\u636e\u7684\u5b89\u5168\u6027\uff0c\u5f53\u6211\u4eec\u60f3\u8981\u64cd\u4f5c\u8fd9\u4e9b\u57df\u53d8\u91cf\u600e\u4e48\u529e\u5462\uff1f<\/p>\n<p>\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u4e24\u79cd\u65b9\u6cd5\uff0c\u7b2c\u4e00\u4e2d\u5373\u901a\u8fc7public\u65b9\u5f0f\u7684\u6784\u9020\u5668\uff08\u6216\u79f0\u6784\u9020\u51fd\u6570\uff09\uff0c\u5bf9\u8c61\u4e00\u5b9e\u4f8b\u5316\u5c31\u5bf9\u8be5\u53d8\u91cf\u8d4b\u503c\u3002\u7b2c\u4e8c\u79cd\u5c31\u662f\u901a\u8fc7\u4e0a\u9762\u63d0\u5230\u7684set\u548cget\u65b9\u6cd5\uff0c\u8fd9\u91cc\u6211\u4e3e\u4e00\u4e2a\u7279\u5b9a\u7684\u4f8b\u5b50<\/p>\n<p>\u5b58\u53d6\u5668<br \/>\nTypeScript\u4e2d\u7684\u5b58\u53d6\u5668\u5c31\u7c7b\u4f3c\u4e0ejava\u4e2dset\u548cget\u65b9\u6cd5\uff0c\u53ea\u4e0d\u8fc7\u8c03\u7528\u7684\u65b9\u5f0f\u4e0d\u4e00\u6837\u3002\u6bd4\u5982\u5728\u4e00\u4e2a\u7c7b\u4e2d\u6211\u4eec\u5c06\u5176\u4e2d\u4e00\u4e2a\u5c5e\u6027\u7528private\u4fee\u9970\uff0c\u90a3\u4e48\uff0c\u5728\u7c7b\u7684\u5916\u90e8\u5c31\u65e0\u6cd5\u8bbf\u95ee\u5230\u8be5\u5c5e\u6027\uff0c\u8fd9\u4e2a\u65f6\u5019\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7getters\/setters\u6765\u5c01\u88c5\u4e00\u4e0b\uff0c\u4ee5\u4fbf\u5728\u7c7b\u7684\u5916\u90e8\u53bb\u8bbf\u95ee\u8be5\u5c5e\u6027\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u53ea\u5e26\u6709 get\u4e0d\u5e26\u6709set\u7684\u5b58\u53d6\u5668\u81ea\u52a8\u88ab\u63a8\u65ad\u4e3areadonly\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u5982\u679c\u53ea\u5199get\u4f46\u6ca1\u6709set\u7684\u8bdd\uff0c\u6211\u4eec\u662f\u4e0d\u80fd\u66f4\u6539\u503c\u7684\u3002<\/p>\n<pre class=\"hljs typescript\"><code class=\"hljs typescript\"><span class=\"hljs-comment\">\/*\u5b58\u53d6\u5668*\/<\/span>\r\n\r\n<span class=\"hljs-keyword\">class<\/span> Person {\r\n    <span class=\"hljs-keyword\">private<\/span> _age: <span class=\"hljs-built_in\">number<\/span>;\r\n\r\n    <span class=\"hljs-comment\">\/*\u76f8\u5f53\u4e8ejava\u4e2d\u7684getAge()*\/<\/span>\r\n    <span class=\"hljs-keyword\">get<\/span> age() {\r\n        <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-keyword\">this<\/span>._age;\r\n    }\r\n    <span class=\"hljs-comment\">\/*\u76f8\u5f53\u4e8ejava\u4e2d\u7684setAge()*\/<\/span>\r\n    <span class=\"hljs-keyword\">set<\/span> age(inputAge: <span class=\"hljs-built_in\">number<\/span>) {\r\n        <span class=\"hljs-comment\">\/*\u8fd9\u91cc\u53ef\u4ee5\u505a\u4e00\u4e9b\u903b\u8f91\u5904\u7406 *\/<\/span>\r\n        <span class=\"hljs-keyword\">if<\/span> (inputAge &lt; <span class=\"hljs-number\">0<\/span> || inputAge &gt; <span class=\"hljs-number\">150<\/span>) {\r\n            alert(<span class=\"hljs-string\">\"\u5e74\u9f84\u5f02\u5e38\"<\/span>);\r\n        } <span class=\"hljs-keyword\">else<\/span> {\r\n            <span class=\"hljs-keyword\">this<\/span>._age = inputAge;\r\n        }\r\n    }\r\n    say() {\r\n        <span class=\"hljs-built_in\">console<\/span>.log(<span class=\"hljs-string\">`i'm <span class=\"hljs-subst\">${this._age}<\/span> years old`<\/span>);\r\n    }\r\n}\r\n<span class=\"hljs-keyword\">let<\/span> p = <span class=\"hljs-keyword\">new<\/span> Person();\r\n<span class=\"hljs-comment\">\/\/p._age=23;\/\/\u9519\u8bef\uff0c\u8fd9\u91cc\u8bbf\u95ee\u4e0d\u5230<\/span>\r\np.age = <span class=\"hljs-number\">23<\/span>;<span class=\"hljs-comment\">\/\/\u8fd9\u91cc\u76f8\u5f53\u4e8e\u8c03\u7528java\u4e2d\u7684setAge()\u65b9\u6cd5\u3002<\/span>\r\np.say();<\/code><code class=\"hljs\">\r\n<\/code><code class=\"hljs\">\r\n<\/code><code class=\"hljs\">\r\n<\/code><code class=\"hljs\">\u8fd9\u6837\u4e00\u6765\uff0c\u6211\u4e0d\u7528\u76f4\u63a5\u5bf9Person\u7c7b\u4e2d\u7684\u57df\u53d8\u91cf\u64cd\u4f5c\uff0c<\/code><code class=\"hljs actionscript\">\u800c\u662f\u901a\u8fc7<span class=\"hljs-keyword\">set<\/span>\u548c<span class=\"hljs-keyword\">get<\/span>\u65b9\u6cd5\u95f4\u63a5\u5730\u64cd\u4f5c\u8fd9\u4e9b\u53d8\u91cf\uff0c\u8fd9\u6837\u5c31\u80fd\u63d0\u9ad8\u57df\u53d8\u91cf\u7684\u5b89\u5168\u6027\uff0c\u540c\u65f6\u53c8\u4fdd\u8bc1\u4e86\u57df\u53d8\u91cf\u7684\u5c01\u88c5\u578b\u3002<\/code><code class=\"hljs\">\r\n<\/code><code class=\"hljs actionscript\">\u6700\u540e\u8bf4\u8bf4<span class=\"hljs-keyword\">set<\/span>\u548c<span class=\"hljs-keyword\">get<\/span>\u65b9\u6cd5\u7684\u4f7f\u7528\u573a\u666f\uff0c\u4e00\u822c\u6765\u8bf4<span class=\"hljs-keyword\">set<\/span>\u548c<span class=\"hljs-keyword\">get<\/span>\u65b9\u6cd5\u90fd\u662f\u5bf9\u79c1\u6709\u57df\u53d8\u91cf\u8fdb\u884c\u64cd\u4f5c\u7684\uff0c\u6240\u4ee5\u5927\u591a\u6570\u90fd\u662f\u4f7f\u7528\u5728\u5305\u542b\u7279\u5b9a\u5c5e\u6027\u7684\u7c7b\u5b9e\u4f53\u4e2d\u3002<\/code><\/pre>\n<p>\u5982\u679c\u6709\u95ee\u9898\u6b22\u8fce\u4e0e\u6211\u6c9f\u901a\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5404\u4f4d\u8001\u54e5\u5750\u7a33\u4e86 \u54b1\u4eec\u73b0\u5728\u5c31\u53d1\u8f66\uff0c \u6211\u4eec\u5148\u6765\u770b\u770bset\u548cget\u8fd9\u4e24\u4e2a\u8bcd\u7684\u8868\u9762\u610f\u601d\uff0cset\u662f\u8bbe\u7f6e\u7684\u610f\u601d\uff0c\u800cget\u662f [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":145,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[8],"tags":[23],"_links":{"self":[{"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=\/wp\/v2\/posts\/71"}],"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=71"}],"version-history":[{"count":2,"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=\/wp\/v2\/posts\/71\/revisions"}],"predecessor-version":[{"id":815,"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=\/wp\/v2\/posts\/71\/revisions\/815"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=\/wp\/v2\/media\/145"}],"wp:attachment":[{"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=71"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=71"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=71"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}