{"id":12586,"date":"2023-11-28T22:58:55","date_gmt":"2023-11-28T14:58:55","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=12586"},"modified":"2023-11-29T22:21:44","modified_gmt":"2023-11-29T14:21:44","slug":"javascript-zhong-zhan-kai-spread-yun-suan-fu-he-s","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/javascript-zhong-zhan-kai-spread-yun-suan-fu-he-s\/","title":{"rendered":"JavaScript \u4e2d\u5c55\u5f00(spread)\u8fd0\u7b97\u7b26\u548c\u5269\u4f59(Rest)\u8fd0\u7b97\u7b26\u6709\u4ec0\u4e48\u533a\u522b\uff1f"},"content":{"rendered":"<p>\u5c55\u5f00\u8fd0\u7b97\u7b26\uff08spread operator\uff09\u548c\u5269\u4f59\u8fd0\u7b97\u7b26\uff08rest operator\uff09\u5728 JavaScript \u4e2d\u90fd\u4f7f\u7528\u4e09\u4e2a\u70b9 <code>...<\/code>\uff0c\u4f46\u5b83\u4eec\u7684\u5e94\u7528\u573a\u666f\u548c\u4f5c\u7528\u662f\u4e0d\u540c\u7684\u3002<\/p>\n<ol>\n<li>\n<p><strong>\u5c55\u5f00\u8fd0\u7b97\u7b26\uff08Spread Operator\uff09<\/strong>\uff1a<\/p>\n<ul>\n<li>\u7528\u4e8e\u5c55\u5f00\u53ef\u8fed\u4ee3\u5bf9\u8c61\uff08\u6bd4\u5982\u6570\u7ec4\u3001\u5bf9\u8c61\u3001\u5b57\u7b26\u4e32\u7b49\uff09\uff0c\u5c06\u5176\u62c6\u5206\u4e3a\u5355\u72ec\u7684\u503c\u3002\u5728\u51fd\u6570\u8c03\u7528\u6216\u8005\u6570\u7ec4\/\u5bf9\u8c61\u5b57\u9762\u91cf\u4e2d\uff0c\u53ef\u4ee5\u5c06\u6570\u7ec4\u3001\u5bf9\u8c61\u7b49\u5c55\u5f00\u4e3a\u5355\u72ec\u7684\u5143\u7d20\u3002<\/li>\n<\/ul>\n<pre><code class=\"language-javascript\">\/\/ \u6570\u7ec4\u5c55\u5f00\nconst arr1 = [1, 2, 3];\nconst arr2 = [...arr1, 4, 5]; \/\/ [1, 2, 3, 4, 5]\n\n\/\/ \u5bf9\u8c61\u5c55\u5f00\nconst obj1 = { a: 1, b: 2 };\nconst obj2 = { ...obj1, c: 3 }; \/\/ { a: 1, b: 2, c: 3 }\n<\/code><\/pre>\n<\/li>\n<li>\n<p><strong>\u5269\u4f59\u8fd0\u7b97\u7b26\uff08Rest Operator\uff09<\/strong>\uff1a<\/p>\n<ul>\n<li>\u7528\u4e8e\u5c06\u591a\u4e2a\u53c2\u6570\u6216\u5269\u4f59\u7684\u53c2\u6570\u6536\u96c6\u6210\u4e00\u4e2a\u6570\u7ec4\u3002\u5b83\u5728\u51fd\u6570\u7684\u53c2\u6570\u5217\u8868\u4e2d\u4f7f\u7528\uff0c\u5c06\u591a\u4f59\u7684\u53c2\u6570\u6536\u96c6\u4e3a\u4e00\u4e2a\u6570\u7ec4\u3002<\/li>\n<\/ul>\n<pre><code class=\"language-javascript\">function sum(...args) {\n  return args.reduce((acc, val) =&gt; acc + val, 0);\n}\n\nsum(1, 2, 3, 4); \/\/ args \u5c06\u662f\u4e00\u4e2a\u5305\u542b\u6240\u6709\u53c2\u6570\u7684\u6570\u7ec4 [1, 2, 3, 4]\n<\/code><\/pre>\n<\/li>\n<\/ol>\n<p>\u5173\u952e\u533a\u522b\u5728\u4e8e\u4f7f\u7528\u573a\u666f\uff1a\u5c55\u5f00\u8fd0\u7b97\u7b26\u7528\u4e8e\u5c55\u5f00\u6570\u7ec4\u6216\u5bf9\u8c61\uff0c\u800c\u5269\u4f59\u8fd0\u7b97\u7b26\u7528\u4e8e\u6536\u96c6\u591a\u4f59\u7684\u53c2\u6570\u5e76\u5c06\u5b83\u4eec\u7ec4\u6210\u4e00\u4e2a\u6570\u7ec4\u3002\u5c55\u5f00\u8fd0\u7b97\u7b26\u662f\u5c06\u4e00\u4e2a\u53ef\u8fed\u4ee3\u5bf9\u8c61\u5c55\u5f00\u6210\u72ec\u7acb\u7684\u503c\uff0c\u800c\u5269\u4f59\u8fd0\u7b97\u7b26\u662f\u5c06\u591a\u4e2a\u53c2\u6570\u5408\u5e76\u4e3a\u4e00\u4e2a\u6570\u7ec4\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5c55\u5f00\u8fd0\u7b97\u7b26\uff08spread operator\uff09\u548c\u5269\u4f59\u8fd0\u7b97\u7b26\uff08rest operator\uff09\u5728 JavaScript [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[115],"tags":[],"class_list":["post-12586","post","type-post","status-publish","format-standard","hentry","category-javascript"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12586","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=12586"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12586\/revisions"}],"predecessor-version":[{"id":13544,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12586\/revisions\/13544"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=12586"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=12586"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=12586"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}