{"id":4080,"date":"2024-11-10T14:16:31","date_gmt":"2024-11-10T06:16:31","guid":{"rendered":"https:\/\/fwq.ai\/blog\/4080\/"},"modified":"2024-11-10T14:16:31","modified_gmt":"2024-11-10T06:16:31","slug":"javascript-%e5%87%bd%e6%95%b0%e4%bc%a0%e5%8f%82%ef%bc%9a%e5%a6%82%e4%bd%95%e6%8c%87%e5%ae%9a%e7%89%b9%e5%ae%9a%e5%8f%82%e6%95%b0%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/4080\/","title":{"rendered":"JavaScript \u51fd\u6570\u4f20\u53c2\uff1a\u5982\u4f55\u6307\u5b9a\u7279\u5b9a\u53c2\u6570\uff1f"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/001\/246\/273\/173122201536192.jpg\" class=\"aligncenter\" title=\"JavaScript \u51fd\u6570\u4f20\u53c2\uff1a\u5982\u4f55\u6307\u5b9a\u7279\u5b9a\u53c2\u6570\uff1f\u63d2\u56fe\" alt=\"JavaScript \u51fd\u6570\u4f20\u53c2\uff1a\u5982\u4f55\u6307\u5b9a\u7279\u5b9a\u53c2\u6570\uff1f\u63d2\u56fe\" \/><\/p>\n<p><strong>\u6307\u5b9a javascript \u51fd\u6570\u4f20\u53c2\u7684\u53ef\u80fd\u65b9\u6cd5<\/strong><\/p>\n<p>\u5728 javascript \u4e2d\uff0c\u51fd\u6570\u53ef\u4ee5\u901a\u8fc7\u5404\u79cd\u65b9\u5f0f\u6307\u5b9a\u4f20\u53c2\uff1a<\/p>\n<ul>\n<li>\n<p><strong>\u4f4d\u7f6e\u53c2\u6570\uff1a<\/strong>\u51fd\u6570\u6839\u636e\u53c2\u6570\u5728\u51fd\u6570\u5b9a\u4e49\u4e2d\u7684\u4f4d\u7f6e\u8fdb\u884c\u8c03\u7528\u3002<\/p>\n<pre>function fun1(a, b) {\nconsole.log(`a: ${a}, b: ${b}`);\n}\n\nfun1(1, \"hello\"); \/\/ \u8f93\u51fa\uff1aa: 1, b: hello<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/li>\n<li>\n<p><strong>\u5177\u540d\u53c2\u6570\uff1a<\/strong>\u53c2\u6570\u5728\u51fd\u6570\u8c03\u7528\u65f6\u4f7f\u7528\u540d\u79f0\u663e\u5f0f\u6307\u5b9a\u3002<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>function fun2({ a, b }) {\nconsole.log(`a: ${a}, b: ${b}`);\n}\n\nfun2({ a: 2, b: \"world\" }); \/\/ \u8f93\u51fa\uff1aa: 2, b: world<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/li>\n<li>\n<p><strong>\u9ed8\u8ba4\u53c2\u6570\uff1a<\/strong>\u4e3a\u53c2\u6570\u8bbe\u7f6e\u9ed8\u8ba4\u503c\uff0c\u5982\u679c\u5728\u8c03\u7528\u65f6\u672a\u63d0\u4f9b\u5219\u4f7f\u7528\u9ed8\u8ba4\u503c\u3002<\/p>\n<pre>function fun3(a = 1, b = \"default\") {\nconsole.log(`a: ${a}, b: ${b}`);\n}\n\nfun3(); \/\/ \u8f93\u51fa\uff1aa: 1, b: default\nfun3(3, \"updated\"); \/\/ \u8f93\u51fa\uff1aa: 3, b: updated<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/li>\n<\/ul>\n<p>\u7136\u800c\uff0c<strong>javascript \u6ca1\u6709\u6307\u5b9a\u7279\u5b9a\u53c2\u6570\u7684\u8bed\u6cd5<\/strong>\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre>function fun1(a = \"1\", b = \"2\") {\n  \/\/ \u65e0\u6cd5\u6307\u5b9a\u8c03\u7528\u65f6\u53ea\u4f20\u5165 b \u800c\u5ffd\u7565 a\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u8981\u5b9e\u73b0\u7c7b\u4f3c\u7684\u6548\u679c\uff0c\u53ef\u4ee5\u91c7\u7528\u4ee5\u4e0b\u65b9\u5f0f\uff1a<\/p>\n<ul>\n<li>\n<p><strong>\u4f7f\u7528\u5bf9\u8c61\u53c2\u6570\uff1a<\/strong>\u5c06\u53c2\u6570\u5305\u88c5\u5728\u5bf9\u8c61\u4e2d\u5e76\u5c06\u5176\u4f5c\u4e3a\u5355\u4e00\u53c2\u6570\u4f20\u9012\u3002<\/p>\n<pre>function fun1(params) {\nconst { a, b } = params;\n\/\/ ...\u5176\u4f59\u4ee3\u7801\n}\n\nfun1({ b: \"123\" }); \/\/ a: undefined, b: 123<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fJavaScript \u51fd\u6570\u4f20\u53c2\uff1a\u5982\u4f55\u6307\u5b9a\u7279\u5b9a\u53c2\u6570\uff1f\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6307\u5b9a javascript \u51fd\u6570\u4f20\u53c2\u7684\u53ef\u80fd\u65b9\u6cd5 \u5728 javascript \u4e2d\uff0c\u51fd\u6570\u53ef\u4ee5\u901a\u8fc7\u5404\u79cd\u65b9\u5f0f\u6307\u5b9a\u4f20\u53c2\uff1a \u4f4d\u7f6e\u53c2\u6570\uff1a\u51fd\u6570\u6839\u636e\u53c2\u6570\u5728\u51fd\u6570\u5b9a\u4e49\u4e2d\u7684\u4f4d\u7f6e\u8fdb\u884c\u8c03\u7528\u3002 function fun1(a, b) { console.log(`a: ${a}, b: ${b}`); } fun1(1, &#8220;hello&#8221;); \/\/ \u8f93\u51fa\uff1aa: 1, b: hello \u767b\u5f55\u540e\u590d\u5236 \u5177\u540d\u53c2\u6570\uff1a\u53c2\u6570\u5728\u51fd\u6570\u8c03\u7528\u65f6\u4f7f\u7528\u540d\u79f0\u663e\u5f0f\u6307\u5b9a\u3002 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b function fun2({ a, b }) { console.log(`a: ${a}, b: ${b}`); } fun2({ a: 2, b: &#8220;world&#8221; }); \/\/ \u8f93\u51fa\uff1aa: 2, b: world \u767b\u5f55\u540e\u590d\u5236 \u9ed8\u8ba4\u53c2\u6570\uff1a\u4e3a\u53c2\u6570\u8bbe\u7f6e\u9ed8\u8ba4\u503c\uff0c\u5982\u679c\u5728\u8c03\u7528\u65f6\u672a\u63d0\u4f9b\u5219\u4f7f\u7528\u9ed8\u8ba4\u503c\u3002 function fun3(a = 1, b [&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-4080","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/4080","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=4080"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/4080\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=4080"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=4080"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=4080"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}