{"id":688,"date":"2020-01-11T09:45:58","date_gmt":"2020-01-11T01:45:58","guid":{"rendered":"http:\/\/blog.xrhoujie.com\/?p=688"},"modified":"2020-01-03T09:50:07","modified_gmt":"2020-01-03T01:50:07","slug":"typescript-%e5%87%bd%e6%95%b0%e5%8f%af%e9%80%89%e5%8f%82%e6%95%b0%e5%92%8c%e9%bb%98%e8%ae%a4%e5%8f%82%e6%95%b0","status":"publish","type":"post","link":"http:\/\/blog.xrhoujie.com\/?p=688","title":{"rendered":"TypeScript \u51fd\u6570\u53ef\u9009\u53c2\u6570\u548c\u9ed8\u8ba4\u53c2\u6570"},"content":{"rendered":"<div>\n<p>\u5728\u51fd\u6570\u53c2\u6570\u4e2d\u6307\u5b9a\u7c7b\u578b<\/p>\n<p>function test(name:string, age:number) {<\/p>\n<p>\/\/doSomething<\/p>\n<p>}<\/p>\n<p>\u5f53\u7ed9\u51fd\u6570\u53c2\u6570\u6307\u5b9a\u7c7b\u578b\u540e\uff0c\u5f53\u6211\u4eec\u8c03\u7528\u8be5\u51fd\u6570\u5e76\u4f20\u5165\u53c2\u6570\u540e\uff0cts\u4f1a\u5bf9\u6211\u4eec\u4f20\u5165\u7684\u53c2\u6570\u7c7b\u578b\u8fdb\u884c\u68c0\u67e5\u3002<\/p>\n<hr \/>\n<p>\u53ef\u9009\u53c2\u6570<\/p>\n<p>\u7528\u95ee\u53f7\u8868\u660e\u6b64\u53c2\u6570\u662f\u53ef\u9009\u7684<\/p>\n<\/div>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-689\" src=\"http:\/\/blog.xrhoujie.com\/wp-content\/uploads\/2020\/01\/\u5fae\u4fe1\u56fe\u7247_20200103094722.png\" alt=\"\" width=\"483\" height=\"98\" \/><img loading=\"lazy\" class=\"alignnone size-full wp-image-689\" src=\"http:\/\/blog.xrhoujie.com\/wp-content\/uploads\/2020\/01\/\u5fae\u4fe1\u56fe\u7247_20200103094722.png\" alt=\"\" width=\"483\" height=\"98\" \/> private testData(a:string,b?:number,c:string = &#8217;10&#8217;) {<br \/>\nconsole.log(a,b,c) \/\/ 123,undefined,10<br \/>\n}<\/p>\n<div>\n<p>test\u51fd\u6570\u4e2d\u7684b\u53c2\u6570\u4e3a\u53ef\u9009\u53c2\u6570<img loading=\"lazy\" class=\"alignnone size-full wp-image-690\" src=\"http:\/\/blog.xrhoujie.com\/wp-content\/uploads\/2020\/01\/\u5fae\u4fe1\u56fe\u7247_20200103094722-1-e1578016135733.png\" alt=\"\" width=\"482\" height=\"98\" srcset=\"http:\/\/blog.xrhoujie.com\/wp-content\/uploads\/2020\/01\/\u5fae\u4fe1\u56fe\u7247_20200103094722-1-e1578016135733.png 482w, http:\/\/blog.xrhoujie.com\/wp-content\/uploads\/2020\/01\/\u5fae\u4fe1\u56fe\u7247_20200103094722-1-e1578016135733-300x61.png 300w\" sizes=\"(max-width: 482px) 100vw, 482px\" \/>\uff0c\u5728\u8c03\u7528testData\u51fd\u6570\u65f6\u6211\u4eec\u53ea\u4e3aa\u53c2\u6570\u8d4b\u4e86\u503c\uff0cc\u6709\u9ed8\u8ba4\u53c2\u6570\u503c\uff0cb\u53ef\u9009\u6ca1\u6709\u8d4b\u503c\uff0c\u8f93\u51faundefined<\/p>\n<p>\u6ce8\u610f\uff1a\u53ef\u9009\u53c2\u6570\u8981\u653e\u5728\u5fc5\u9009\u53c2\u6570\u7684\u540e\u9762\uff0c\u9ed8\u8ba4\u53c2\u6570\u7684\u524d\u9762\u3002<\/p>\n<hr \/>\n<p>\u53c2\u6570\u9ed8\u8ba4\u503c<\/p>\n<p>\u5728\u53c2\u6570\u58f0\u660e\u540e\u7528\u7b49\u53f7\u6765\u6307\u5b9a\u53c2\u6570\u7684\u9ed8\u8ba4\u503c<\/p>\n<p>function test(a:string, b:string=&#8221;hhh&#8221;) {<\/p>\n<p>console.log(a);<\/p>\n<p>console.log(b);<\/p>\n<p>}<\/p>\n<p>test(&#8220;eee&#8221;);\u00a0 \u00a0 \/\/\u8f93\u51fa&#8221;eee&#8221;&#8221;hhh&#8221;<\/p>\n<p>\u8c03\u7528test\u51fd\u6570\u65f6\u6211\u4eec\u53ea\u7ed9a\u53c2\u6570\u8d4b\u4e86\u503c\uff0cb\u53c2\u6570\u4f7f\u7528\u7684\u662f\u9ed8\u8ba4\u503c<\/p>\n<p>\u6ce8\u610f\uff1a\u9ed8\u8ba4\u53c2\u6570\u53ea\u80fd\u653e\u5728\u6240\u6709\u53c2\u6570\u7684\u6700\u540e\u3002<\/p>\n<\/div>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u51fd\u6570\u53c2\u6570\u4e2d\u6307\u5b9a\u7c7b\u578b function test(name:string, age:number) { \/\/d [&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\/688"}],"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=688"}],"version-history":[{"count":1,"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=\/wp\/v2\/posts\/688\/revisions"}],"predecessor-version":[{"id":691,"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=\/wp\/v2\/posts\/688\/revisions\/691"}],"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=688"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=688"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=688"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}