{"id":3186,"date":"2024-11-10T14:27:16","date_gmt":"2024-11-10T06:27:16","guid":{"rendered":"https:\/\/fwq.ai\/blog\/3186\/"},"modified":"2024-11-10T14:27:16","modified_gmt":"2024-11-10T06:27:16","slug":"js%e4%b8%ad%e5%a6%82%e4%bd%95%e5%a3%b0%e6%98%8e%e6%95%b0%e7%bb%84","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/3186\/","title":{"rendered":"js\u4e2d\u5982\u4f55\u58f0\u660e\u6570\u7ec4"},"content":{"rendered":"<blockquote><p>\n  \u53ef\u4ee5\u5728 javascript \u4e2d\u4f7f\u7528\u65b9\u62ec\u53f7 [] \u58f0\u660e\u6570\u7ec4\uff0c\u5185\u5bb9\u5305\u62ec\uff1a\u5143\u7d20\u5217\u8868\u3001\u7a7a\u6570\u7ec4\u3001\u6570\u7ec4\u5c5e\u6027\u548c\u65b9\u6cd5\uff0c\u5982 length\u3001push()\u3001pop()\u3001unshift() \u548c shift()\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/08\/2024110806312087610.jpg\" class=\"aligncenter\" title=\"js\u4e2d\u5982\u4f55\u58f0\u660e\u6570\u7ec4\u63d2\u56fe\" alt=\"js\u4e2d\u5982\u4f55\u58f0\u660e\u6570\u7ec4\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5728 JavaScript \u4e2d\u58f0\u660e\u6570\u7ec4<\/strong><\/p>\n<p><strong>\u56de\u7b54\uff1a<\/strong><\/p>\n<p>\u5728 JavaScript \u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u65b9\u62ec\u53f7 [] \u6765\u58f0\u660e\u4e00\u4e2a\u6570\u7ec4\u3002<\/p>\n<p><strong>\u8be6\u7ec6\u8bf4\u660e\uff1a<\/strong><\/p>\n<p>\u58f0\u660e\u4e00\u4e2a\u6570\u7ec4\u65f6\uff0c\u65b9\u62ec\u53f7\u5185\u53ef\u4ee5\u5305\u542b\u4ee5\u4e0b\u5185\u5bb9\uff1a<\/p>\n<ul>\n<li> <strong>\u5143\u7d20\u5217\u8868\uff1a<\/strong>\u6570\u7ec4\u4e2d\u7684\u503c\uff0c\u53ef\u4ee5\u7528\u9017\u53f7\u5206\u9694\u3002\u4f8b\u5982\uff1aconst myArray = [1, 2, 3];<\/li>\n<li> <strong>\u7a7a\u6570\u7ec4\uff1a<\/strong>\u4e0d\u5305\u542b\u4efb\u4f55\u5143\u7d20\u7684\u7a7a\u6570\u7ec4\uff0c\u53ef\u4ee5\u901a\u8fc7 const emptyArray = []; \u58f0\u660e\u3002<\/li>\n<\/ul>\n<p><strong>\u6570\u7ec4\u5c5e\u6027\u548c\u65b9\u6cd5\uff1a<\/strong><\/p>\n<p>\u6570\u7ec4\u662f\u4e00\u79cd\u5bf9\u8c61\u7c7b\u578b\uff0c\u5177\u6709\u4ee5\u4e0b\u5c5e\u6027\u548c\u65b9\u6cd5\uff1a<\/p>\n<ul>\n<li> <strong>length\uff1a<\/strong>\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u4e2a\u6570\u3002<\/li>\n<li> <strong>push()\uff1a<\/strong>\u5411\u6570\u7ec4\u5c3e\u90e8\u6dfb\u52a0\u5143\u7d20\u3002<\/li>\n<li> <strong>pop()\uff1a<\/strong>\u79fb\u9664\u5e76\u8fd4\u56de\u6570\u7ec4\u5c3e\u90e8\u7684\u5143\u7d20\u3002<\/li>\n<li> <strong>unshift()\uff1a<\/strong>\u5411\u6570\u7ec4\u5934\u90e8\u6dfb\u52a0\u5143\u7d20\u3002<\/li>\n<li> <strong>shift()\uff1a<\/strong>\u79fb\u9664\u5e76\u8fd4\u56de\u6570\u7ec4\u5934\u90e8\u5143\u7d20\u3002<\/li>\n<\/ul>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><\/p>\n<pre>\/\/ \u58f0\u660e\u4e00\u4e2a\u5305\u542b\u4e09\u4e2a\u5143\u7d20\u7684\u6570\u7ec4\nconst numbers = [1, 2, 3];\n\n\/\/ \u6dfb\u52a0\u4e00\u4e2a\u5143\u7d20\u5230\u6570\u7ec4\u5c3e\u90e8\nnumbers.push(4);\n\n\/\/ \u79fb\u9664\u5e76\u8fd4\u56de\u6570\u7ec4\u5c3e\u90e8\u7684\u5143\u7d20\nconst lastElement = numbers.pop();\n\n\/\/ \u8f93\u51fa\u6570\u7ec4\nconsole.log(numbers); \/\/ [1, 2, 3]\nconsole.log(lastElement); \/\/ 4<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjs\u4e2d\u5982\u4f55\u58f0\u660e\u6570\u7ec4\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>\u53ef\u4ee5\u5728 javascript \u4e2d\u4f7f\u7528\u65b9\u62ec\u53f7 [] \u58f0\u660e\u6570\u7ec4\uff0c\u5185\u5bb9\u5305\u62ec\uff1a\u5143\u7d20\u5217\u8868\u3001\u7a7a\u6570\u7ec4\u3001\u6570\u7ec4\u5c5e\u6027\u548c\u65b9\u6cd5\uff0c\u5982 length\u3001push()\u3001pop()\u3001unshift() \u548c shift()\u3002 \u5982\u4f55\u5728 JavaScript \u4e2d\u58f0\u660e\u6570\u7ec4 \u56de\u7b54\uff1a \u5728 JavaScript \u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u65b9\u62ec\u53f7 [] \u6765\u58f0\u660e\u4e00\u4e2a\u6570\u7ec4\u3002 \u8be6\u7ec6\u8bf4\u660e\uff1a \u58f0\u660e\u4e00\u4e2a\u6570\u7ec4\u65f6\uff0c\u65b9\u62ec\u53f7\u5185\u53ef\u4ee5\u5305\u542b\u4ee5\u4e0b\u5185\u5bb9\uff1a \u5143\u7d20\u5217\u8868\uff1a\u6570\u7ec4\u4e2d\u7684\u503c\uff0c\u53ef\u4ee5\u7528\u9017\u53f7\u5206\u9694\u3002\u4f8b\u5982\uff1aconst myArray = [1, 2, 3]; \u7a7a\u6570\u7ec4\uff1a\u4e0d\u5305\u542b\u4efb\u4f55\u5143\u7d20\u7684\u7a7a\u6570\u7ec4\uff0c\u53ef\u4ee5\u901a\u8fc7 const emptyArray = []; \u58f0\u660e\u3002 \u6570\u7ec4\u5c5e\u6027\u548c\u65b9\u6cd5\uff1a \u6570\u7ec4\u662f\u4e00\u79cd\u5bf9\u8c61\u7c7b\u578b\uff0c\u5177\u6709\u4ee5\u4e0b\u5c5e\u6027\u548c\u65b9\u6cd5\uff1a length\uff1a\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u4e2a\u6570\u3002 push()\uff1a\u5411\u6570\u7ec4\u5c3e\u90e8\u6dfb\u52a0\u5143\u7d20\u3002 pop()\uff1a\u79fb\u9664\u5e76\u8fd4\u56de\u6570\u7ec4\u5c3e\u90e8\u7684\u5143\u7d20\u3002 unshift()\uff1a\u5411\u6570\u7ec4\u5934\u90e8\u6dfb\u52a0\u5143\u7d20\u3002 shift()\uff1a\u79fb\u9664\u5e76\u8fd4\u56de\u6570\u7ec4\u5934\u90e8\u5143\u7d20\u3002 \u793a\u4f8b\uff1a \/\/ \u58f0\u660e\u4e00\u4e2a\u5305\u542b\u4e09\u4e2a\u5143\u7d20\u7684\u6570\u7ec4 const numbers = [1, 2, 3]; \/\/ \u6dfb\u52a0\u4e00\u4e2a\u5143\u7d20\u5230\u6570\u7ec4\u5c3e\u90e8 numbers.push(4); \/\/ \u79fb\u9664\u5e76\u8fd4\u56de\u6570\u7ec4\u5c3e\u90e8\u7684\u5143\u7d20 const lastElement = [&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-3186","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/3186","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=3186"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/3186\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=3186"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=3186"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=3186"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}