{"id":53089,"date":"2024-12-03T17:33:22","date_gmt":"2024-12-03T09:33:22","guid":{"rendered":"https:\/\/fwq.ai\/blog\/53089\/"},"modified":"2024-12-03T17:33:22","modified_gmt":"2024-12-03T09:33:22","slug":"%e5%a6%82%e4%bd%95%e7%94%a8javascript%e4%bb%8e%e6%95%b0%e7%bb%84%e5%b0%be%e9%83%a8%e6%88%aa%e5%8f%96%e6%8c%87%e5%ae%9a%e6%95%b0%e9%87%8f%e7%9a%84%e5%85%83%e7%b4%a0%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/53089\/","title":{"rendered":"\u5982\u4f55\u7528JavaScript\u4ece\u6570\u7ec4\u5c3e\u90e8\u622a\u53d6\u6307\u5b9a\u6570\u91cf\u7684\u5143\u7d20\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>\u5982\u4f55\u7528JavaScript\u4ece\u6570\u7ec4\u5c3e\u90e8\u622a\u53d6\u6307\u5b9a\u6570\u91cf\u7684\u5143\u7d20\uff1f<\/h1>\n<p>\u5c0f\u4f19\u4f34\u4eec\u6709\u6ca1\u6709\u89c9\u5f97\u5b66\u4e60<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\u5f88\u6709\u610f\u601d\uff1f\u6709\u610f\u601d\u5c31\u5bf9\u4e86\uff01\u4eca\u5929\u5c31\u7ed9\u5927\u5bb6\u5e26\u6765<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300a\u5982\u4f55\u7528JavaScript\u4ece\u6570\u7ec4\u5c3e\u90e8\u622a\u53d6\u6307\u5b9a\u6570\u91cf\u7684\u5143\u7d20\uff1f\u300b<\/span>\uff0c\u4ee5\u4e0b\u5185\u5bb9\u5c06\u4f1a\u6d89\u53ca\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\uff0c\u82e5\u662f\u5728\u5b66\u4e60\u4e2d\u5bf9\u5176\u4e2d\u90e8\u5206\u77e5\u8bc6\u70b9\u6709\u7591\u95ee\uff0c\u6216\u8bb8\u770b\u4e86\u672c\u6587\u5c31\u80fd\u5e2e\u5230\u4f60\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241126\/1732609698674586a2cdcfd.jpg\" class=\"aligncenter\" title=\"\u5982\u4f55\u7528JavaScript\u4ece\u6570\u7ec4\u5c3e\u90e8\u622a\u53d6\u6307\u5b9a\u6570\u91cf\u7684\u5143\u7d20\uff1f\u63d2\u56fe\" alt=\"\u5982\u4f55\u7528JavaScript\u4ece\u6570\u7ec4\u5c3e\u90e8\u622a\u53d6\u6307\u5b9a\u6570\u91cf\u7684\u5143\u7d20\uff1f\u63d2\u56fe\" \/><\/p>\n<p><strong>\u6570\u7ec4\u6570\u636e\u5904\u7406\uff1a\u4ece\u540e\u5f80\u524d\u622a\u53d6<\/strong><\/p>\n<p>\u6570\u7ec4\u5904\u7406\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u9700\u8981\u6839\u636e\u6761\u4ef6\u5bf9\u6570\u7ec4\u5143\u7d20\u8fdb\u884c\u64cd\u4f5c\u3002\u8fd9\u91cc\u6709\u4e00\u4e2a\u5e38\u89c1\u95ee\u9898\uff1a\u7ed9\u5b9a\u4e00\u4e2a\u6570\u7ec4\u548c\u4e00\u4e2a\u6570\u5b57\uff0c\u9700\u8981\u6309\u7167\u7279\u5b9a\u89c4\u5219\u622a\u53d6\u6570\u7ec4\u5143\u7d20\u3002<\/p>\n<p><strong>\u95ee\u9898\u63cf\u8ff0\uff1a<\/strong><\/p>\n<p>\u6570\u7ec4 arr \u5305\u542b\u4ee5\u4e0b\u5143\u7d20\uff1a<\/p>\n<pre>[3, 4, 5, 6, 7, 8, 9]<\/pre>\n<p>\u7ed9\u5b9a\u4e00\u4e2a\u6570\u5b57 a\uff0c\u8981\u6c42\uff1a<\/p>\n<ul>\n<li>\u5f53 a \u4e3a 2 \u65f6\uff0c\u8fd4\u56de arr \u4e2d\u6700\u540e\u4e00\u4e2a\u5143\u7d20\u4e3a [9] \u7684\u6570\u7ec4\u3002<\/li>\n<li>\u5f53 a \u4e3a 4 \u65f6\uff0c\u8fd4\u56de arr \u4e2d\u540e\u4e09\u4e2a\u5143\u7d20\u4e3a [7, 8, 9] \u7684\u6570\u7ec4\u3002<\/li>\n<\/ul>\n<p><strong>\u89e3\u51b3\u65b9\u6848\uff1a<\/strong><\/p>\n<p>\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u6211\u4eec\u53ef\u4ee5\u5229\u7528\u6570\u7ec4\u7684 slice \u65b9\u6cd5\uff0c\u5b9e\u73b0\u4ece\u6570\u7ec4\u5c3e\u90e8\u5411\u524d\u622a\u53d6\u5143\u7d20\u3002<\/p>\n<pre>function test(n) {\n  return arr.slice(-(arr.length % n));\n}\n\nconsole.log(test(2)); \/\/ [9]\nconsole.log(test(4)); \/\/ [7, 8, 9]<\/pre>\n<p>\u5728 test \u51fd\u6570\u4e2d\uff1a<\/p>\n<ul>\n<li>arr.length % n\uff1a\u8ba1\u7b97\u6570\u7ec4\u957f\u5ea6\u9664\u4ee5 n \u7684\u4f59\u6570\uff0c\u8868\u793a\u9700\u8981\u622a\u53d6\u7684\u5143\u7d20\u4e2a\u6570\u3002<\/li>\n<li>slice(-(arr.length % n))\uff1a\u4ece\u6570\u7ec4\u5c3e\u90e8\u5411\u524d\u622a\u53d6\u6307\u5b9a\u4e2a\u6570\u7684\u5143\u7d20\uff0c\u5e76\u5c06\u7ed3\u679c\u8fd4\u56de\u3002<\/li>\n<\/ul>\n<p>\u4eca\u5929\u5173\u4e8e\u300a\u5982\u4f55\u7528JavaScript\u4ece\u6570\u7ec4\u5c3e\u90e8\u622a\u53d6\u6307\u5b9a\u6570\u91cf\u7684\u5143\u7d20\uff1f\u300b\u7684\u5185\u5bb9\u5c31\u4ecb\u7ecd\u5230\u8fd9\u91cc\u4e86\uff0c\u662f\u4e0d\u662f\u5b66\u8d77\u6765\u4e00\u76ee\u4e86\u7136\uff01\u60f3\u8981\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u7684\u5185\u5bb9\u8bf7\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\uff01<\/p>\n<dl>\n<dt><\/dt>\n<dd>\n   Linux \u4e0a Go \u7a0b\u5e8f\u542f\u52a8\u65b9\u5f0f\u5982\u4f55\u5f71\u54cd\u6587\u4ef6\u8def\u5f84\u83b7\u53d6\uff1f\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u4f55\u7528JavaScript\u4ece\u6570\u7ec4\u5c3e\u90e8\u622a\u53d6\u6307\u5b9a\u6570\u91cf\u7684\u5143\u7d20\uff1f \u5c0f\u4f19\u4f34\u4eec\u6709\u6ca1\u6709\u89c9\u5f97\u5b66\u4e60\u6587\u7ae0\u5f88\u6709\u610f\u601d\uff1f\u6709\u610f\u601d\u5c31\u5bf9\u4e86\uff01\u4eca\u5929\u5c31\u7ed9\u5927\u5bb6\u5e26\u6765\u300a\u5982\u4f55\u7528JavaScript\u4ece\u6570\u7ec4\u5c3e\u90e8\u622a\u53d6\u6307\u5b9a\u6570\u91cf\u7684\u5143\u7d20\uff1f\u300b\uff0c\u4ee5\u4e0b\u5185\u5bb9\u5c06\u4f1a\u6d89\u53ca\u5230\uff0c\u82e5\u662f\u5728\u5b66\u4e60\u4e2d\u5bf9\u5176\u4e2d\u90e8\u5206\u77e5\u8bc6\u70b9\u6709\u7591\u95ee\uff0c\u6216\u8bb8\u770b\u4e86\u672c\u6587\u5c31\u80fd\u5e2e\u5230\u4f60\uff01 \u6570\u7ec4\u6570\u636e\u5904\u7406\uff1a\u4ece\u540e\u5f80\u524d\u622a\u53d6 \u6570\u7ec4\u5904\u7406\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u9700\u8981\u6839\u636e\u6761\u4ef6\u5bf9\u6570\u7ec4\u5143\u7d20\u8fdb\u884c\u64cd\u4f5c\u3002\u8fd9\u91cc\u6709\u4e00\u4e2a\u5e38\u89c1\u95ee\u9898\uff1a\u7ed9\u5b9a\u4e00\u4e2a\u6570\u7ec4\u548c\u4e00\u4e2a\u6570\u5b57\uff0c\u9700\u8981\u6309\u7167\u7279\u5b9a\u89c4\u5219\u622a\u53d6\u6570\u7ec4\u5143\u7d20\u3002 \u95ee\u9898\u63cf\u8ff0\uff1a \u6570\u7ec4 arr \u5305\u542b\u4ee5\u4e0b\u5143\u7d20\uff1a [3, 4, 5, 6, 7, 8, 9] \u7ed9\u5b9a\u4e00\u4e2a\u6570\u5b57 a\uff0c\u8981\u6c42\uff1a \u5f53 a \u4e3a 2 \u65f6\uff0c\u8fd4\u56de arr \u4e2d\u6700\u540e\u4e00\u4e2a\u5143\u7d20\u4e3a [9] \u7684\u6570\u7ec4\u3002 \u5f53 a \u4e3a 4 \u65f6\uff0c\u8fd4\u56de arr \u4e2d\u540e\u4e09\u4e2a\u5143\u7d20\u4e3a [7, 8, 9] \u7684\u6570\u7ec4\u3002 \u89e3\u51b3\u65b9\u6848\uff1a \u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u6211\u4eec\u53ef\u4ee5\u5229\u7528\u6570\u7ec4\u7684 slice \u65b9\u6cd5\uff0c\u5b9e\u73b0\u4ece\u6570\u7ec4\u5c3e\u90e8\u5411\u524d\u622a\u53d6\u5143\u7d20\u3002 function test(n) { return arr.slice(-(arr.length % n)); } console.log(test(2)); \/\/ [9] console.log(test(4)); \/\/ [7, [&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-53089","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/53089","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=53089"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/53089\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=53089"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=53089"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=53089"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}