{"id":3348,"date":"2024-11-10T10:11:11","date_gmt":"2024-11-10T02:11:11","guid":{"rendered":"https:\/\/fwq.ai\/blog\/3348\/"},"modified":"2024-11-10T10:11:11","modified_gmt":"2024-11-10T02:11:11","slug":"js-%e6%95%b0%e7%bb%84%e5%af%b9%e8%b1%a1%e5%a6%82%e4%bd%95%e6%88%aa%e5%8f%96","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/3348\/","title":{"rendered":"js \u6570\u7ec4\u5bf9\u8c61\u5982\u4f55\u622a\u53d6"},"content":{"rendered":"<blockquote><p>\n  javascript \u6570\u7ec4\u622a\u53d6\u65b9\u6cd5\uff1aslice() \u65b9\u6cd5\uff1a\u4ece\u6570\u7ec4\u4e2d\u622a\u53d6\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u63a5\u53d7\u8d77\u59cb\u7d22\u5f15\u548c\u7ed3\u675f\u7d22\u5f15\u3002splice() \u65b9\u6cd5\uff1a\u65e2\u53ef\u4ee5\u622a\u53d6\u6570\u7ec4\uff0c\u4e5f\u53ef\u4ee5\u5220\u9664\u6216\u63d2\u5165\u5143\u7d20\uff0c\u63a5\u53d7\u8d77\u59cb\u7d22\u5f15\u3001\u8981\u5220\u9664\u7684\u5143\u7d20\u6570\u91cf\u548c\u8981\u63d2\u5165\u7684\u65b0\u5143\u7d20\u3002\u5176\u4ed6\u65b9\u6cd5\uff1aarray.from()\uff1a\u5c06\u7c7b\u4f3c\u6570\u7ec4\u7684\u5bf9\u8c61\u8f6c\u6362\u4e3a\u6570\u7ec4\uff0c\u7136\u540e\u4f7f\u7528 slice() \u6216 splice() \u8fdb\u884c\u622a\u53d6\u3002map() \u548c filter()\uff1a\u521b\u5efa\u5305\u542b\u6ee1\u8db3\u7279\u5b9a\u6761\u4ef6\u5143\u7d20\u7684\u65b0\u6570\u7ec4\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/08\/2024110810181660171.jpg\" class=\"aligncenter\" title=\"js \u6570\u7ec4\u5bf9\u8c61\u5982\u4f55\u622a\u53d6\u63d2\u56fe\" alt=\"js \u6570\u7ec4\u5bf9\u8c61\u5982\u4f55\u622a\u53d6\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u622a\u53d6 JavaScript \u6570\u7ec4<\/strong><\/p>\n<p><strong>\u4f7f\u7528 slice() \u65b9\u6cd5<\/strong><\/p>\n<p>slice() \u65b9\u6cd5\u7528\u4e8e\u4ece\u6570\u7ec4\u4e2d\u622a\u53d6\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5b83\u63a5\u53d7\u4e24\u4e2a\u53c2\u6570\uff1a\u8d77\u59cb\u7d22\u5f15\u548c\u7ed3\u675f\u7d22\u5f15\u3002<\/p>\n<pre>const arr = [1, 2, 3, 4, 5];\n\n\/\/ \u4ece\u7d22\u5f15 1 \u5f00\u59cb\u622a\u53d6\u5230\u7d22\u5f15 3\uff08\u4e0d\u5305\u62ec\u7d22\u5f15 3\uff09\nconst newArr = arr.slice(1, 3);\n\n\/\/ \u8f93\u51fa newArr\uff1a [2, 3]\nconsole.log(newArr);<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p><strong>\u4f7f\u7528 splice() \u65b9\u6cd5<\/strong><\/p>\n<p>splice() \u65b9\u6cd5\u4e0d\u4ec5\u53ef\u4ee5\u622a\u53d6\u6570\u7ec4\uff0c\u8fd8\u53ef\u4ee5\u5220\u9664\u6216\u63d2\u5165\u5143\u7d20\u3002\u5b83\u63a5\u53d7\u4e09\u4e2a\u53c2\u6570\uff1a\u8d77\u59cb\u7d22\u5f15\u3001\u8981\u5220\u9664\u7684\u5143\u7d20\u6570\u91cf\u4ee5\u53ca\u8981\u63d2\u5165\u7684\u65b0\u5143\u7d20\u3002<\/p>\n<p>\u8981\u4ec5\u622a\u53d6\u6570\u7ec4\uff0c\u5c06\u8981\u5220\u9664\u7684\u5143\u7d20\u6570\u91cf\u8bbe\u7f6e\u4e3a 0 \u5373\u53ef\u3002<\/p>\n<pre>const arr = [1, 2, 3, 4, 5];\n\n\/\/ \u4ece\u7d22\u5f15 1 \u5f00\u59cb\u622a\u53d6\u5230\u7d22\u5f15 3\uff08\u4e0d\u5305\u62ec\u7d22\u5f15 3\uff09\nconst newArr = arr.splice(1, 0);\n\n\/\/ \u8f93\u51fa newArr\uff1a [2, 3]\nconsole.log(newArr);<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p><strong>\u5176\u4ed6\u65b9\u6cd5<\/strong><\/p>\n<p>\u9664\u4e86 slice() \u548c splice() \u65b9\u6cd5\u5916\uff0c\u8fd8\u53ef\u4ee5\u4f7f\u7528\u5176\u4ed6\u65b9\u6cd5\u6765\u622a\u53d6\u6570\u7ec4\uff1a<\/p>\n<ul>\n<li> <strong>Array.from()<\/strong>\uff1a\u5c06\u7c7b\u4f3c\u6570\u7ec4\u7684\u5bf9\u8c61\uff08\u5982 arguments \u5bf9\u8c61\uff09\u8f6c\u6362\u4e3a\u6570\u7ec4\uff0c\u7136\u540e\u4f7f\u7528 slice() \u6216 splice() \u8fdb\u884c\u622a\u53d6\u3002<\/li>\n<li> <strong>map() \u548c filter()<\/strong>\uff1a\u4f7f\u7528 map() \u6216 filter() \u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u53ea\u5305\u542b\u6ee1\u8db3\u7279\u5b9a\u6761\u4ef6\u7684\u5143\u7d20\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fjs \u6570\u7ec4\u5bf9\u8c61\u5982\u4f55\u622a\u53d6\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>javascript \u6570\u7ec4\u622a\u53d6\u65b9\u6cd5\uff1aslice() \u65b9\u6cd5\uff1a\u4ece\u6570\u7ec4\u4e2d\u622a\u53d6\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u63a5\u53d7\u8d77\u59cb\u7d22\u5f15\u548c\u7ed3\u675f\u7d22\u5f15\u3002splice() \u65b9\u6cd5\uff1a\u65e2\u53ef\u4ee5\u622a\u53d6\u6570\u7ec4\uff0c\u4e5f\u53ef\u4ee5\u5220\u9664\u6216\u63d2\u5165\u5143\u7d20\uff0c\u63a5\u53d7\u8d77\u59cb\u7d22\u5f15\u3001\u8981\u5220\u9664\u7684\u5143\u7d20\u6570\u91cf\u548c\u8981\u63d2\u5165\u7684\u65b0\u5143\u7d20\u3002\u5176\u4ed6\u65b9\u6cd5\uff1aarray.from()\uff1a\u5c06\u7c7b\u4f3c\u6570\u7ec4\u7684\u5bf9\u8c61\u8f6c\u6362\u4e3a\u6570\u7ec4\uff0c\u7136\u540e\u4f7f\u7528 slice() \u6216 splice() \u8fdb\u884c\u622a\u53d6\u3002map() \u548c filter()\uff1a\u521b\u5efa\u5305\u542b\u6ee1\u8db3\u7279\u5b9a\u6761\u4ef6\u5143\u7d20\u7684\u65b0\u6570\u7ec4\u3002 \u5982\u4f55\u622a\u53d6 JavaScript \u6570\u7ec4 \u4f7f\u7528 slice() \u65b9\u6cd5 slice() \u65b9\u6cd5\u7528\u4e8e\u4ece\u6570\u7ec4\u4e2d\u622a\u53d6\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5b83\u63a5\u53d7\u4e24\u4e2a\u53c2\u6570\uff1a\u8d77\u59cb\u7d22\u5f15\u548c\u7ed3\u675f\u7d22\u5f15\u3002 const arr = [1, 2, 3, 4, 5]; \/\/ \u4ece\u7d22\u5f15 1 \u5f00\u59cb\u622a\u53d6\u5230\u7d22\u5f15 3\uff08\u4e0d\u5305\u62ec\u7d22\u5f15 3\uff09 const newArr = arr.slice(1, 3); \/\/ \u8f93\u51fa newArr\uff1a [2, 3] console.log(newArr); \u767b\u5f55\u540e\u590d\u5236 \u4f7f\u7528 splice() \u65b9\u6cd5 splice() \u65b9\u6cd5\u4e0d\u4ec5\u53ef\u4ee5\u622a\u53d6\u6570\u7ec4\uff0c\u8fd8\u53ef\u4ee5\u5220\u9664\u6216\u63d2\u5165\u5143\u7d20\u3002\u5b83\u63a5\u53d7\u4e09\u4e2a\u53c2\u6570\uff1a\u8d77\u59cb\u7d22\u5f15\u3001\u8981\u5220\u9664\u7684\u5143\u7d20\u6570\u91cf\u4ee5\u53ca\u8981\u63d2\u5165\u7684\u65b0\u5143\u7d20\u3002 \u8981\u4ec5\u622a\u53d6\u6570\u7ec4\uff0c\u5c06\u8981\u5220\u9664\u7684\u5143\u7d20\u6570\u91cf\u8bbe\u7f6e\u4e3a 0 \u5373\u53ef\u3002 const arr = [&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-3348","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/3348","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=3348"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/3348\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=3348"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=3348"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=3348"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}