{"id":3380,"date":"2024-11-10T15:16:19","date_gmt":"2024-11-10T07:16:19","guid":{"rendered":"https:\/\/fwq.ai\/blog\/3380\/"},"modified":"2024-11-10T15:16:19","modified_gmt":"2024-11-10T07:16:19","slug":"js%e6%ad%a3%e5%88%99%e5%a6%82%e4%bd%95%e5%bf%bd%e7%95%a5%e5%a4%a7%e5%b0%8f%e5%86%99","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/3380\/","title":{"rendered":"js\u6b63\u5219\u5982\u4f55\u5ffd\u7565\u5927\u5c0f\u5199"},"content":{"rendered":"<blockquote><p>\n  \u4f7f\u7528 javascript \u6b63\u5219\u8868\u8fbe\u5f0f\u5ffd\u7565\u5927\u5c0f\u5199\u7684\u65b9\u6cd5\uff1a\u5728\u6b63\u5219\u8868\u8fbe\u5f0f\u6a21\u5f0f\u540e\u6dfb\u52a0 i \u6807\u5fd7\uff0c\u4f8b\u5982\uff1a\/pattern\/ii \u6807\u5fd7\u8868\u793a ignorecase\uff08\u5ffd\u7565\u5927\u5c0f\u5199\uff09\uff0c\u4f7f\u6b63\u5219\u8868\u8fbe\u5f0f\u5bf9\u5927\u5c0f\u5199\u4e0d\u654f\u611f\u4f8b\u5982\uff0c\/js\/i \u53ef\u4ee5\u5339\u914d &#8220;js&#8221; \u6216 &#8220;js&#8221;\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/08\/2024110811121549783.jpg\" class=\"aligncenter\" title=\"js\u6b63\u5219\u5982\u4f55\u5ffd\u7565\u5927\u5c0f\u5199\u63d2\u56fe\" alt=\"js\u6b63\u5219\u5982\u4f55\u5ffd\u7565\u5927\u5c0f\u5199\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u4f7f\u7528 JavaScript \u6b63\u5219\u8868\u8fbe\u5f0f\u5ffd\u7565\u5927\u5c0f\u5199<\/strong><\/p>\n<p>\u5728 JavaScript \u4e2d\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528 i \u6807\u5fd7\u6765\u5ffd\u7565\u5b57\u7b26\u4e32\u5339\u914d\u4e2d\u7684\u5927\u5c0f\u5199\u3002<\/p>\n<p><strong>\u8bed\u6cd5\uff1a<\/strong><\/p>\n<pre>\/pattern\/i<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u5176\u4e2d\uff1a<\/p>\n<ul>\n<li>pattern\uff1a\u8981\u5339\u914d\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u6a21\u5f0f\u3002<\/li>\n<li>i\uff1a\u8868\u793a ignoreCase\uff08\u5ffd\u7565\u5927\u5c0f\u5199\uff09\u6807\u5fd7\u3002<\/li>\n<\/ul>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><\/p>\n<p>\u5339\u914d\u5305\u542b &#8220;JS&#8221; \u6216 &#8220;Js&#8221; \u7684\u5b57\u7b26\u4e32\uff1a<\/p>\n<pre>let regex = \/js\/i;\n\n\"JavaScript\".match(regex); \/\/ [\"JavaScript\"]\n\"Js\".match(regex); \/\/ [\"Js\"]<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u4f7f\u7528 i \u6807\u5fd7\u53ef\u4ee5\u4f7f\u6b63\u5219\u8868\u8fbe\u5f0f\u5bf9\u5927\u5c0f\u5199\u4e0d\u654f\u611f\uff0c\u4ece\u800c\u63d0\u9ad8\u5339\u914d\u7684\u7075\u6d3b\u6027\u3002<\/p>\n<p><strong>\u5176\u4ed6\u6ce8\u610f\u4e8b\u9879\uff1a<\/strong><\/p>\n<ul>\n<li>\u5982\u679c\u6b63\u5219\u8868\u8fbe\u5f0f\u4e2d\u5df2\u7ecf\u4f7f\u7528\u4e86\u5176\u4ed6\u6807\u5fd7\uff08\u4f8b\u5982 g \u6216 m\uff09\uff0c\u5219\u9700\u8981\u5c06 i \u6807\u5fd7\u653e\u5728\u672b\u5c3e\u3002<\/li>\n<li>i \u6807\u5fd7\u53ea\u5f71\u54cd\u5927\u5c0f\u5199\u5339\u914d\u3002\u5b83\u4e0d\u4f1a\u5f71\u54cd\u5176\u4ed6\u6b63\u5219\u8868\u8fbe\u5f0f\u529f\u80fd\uff0c\u4f8b\u5982\u5143\u5b57\u7b26\u6216\u91cf\u8bcd\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fjs\u6b63\u5219\u5982\u4f55\u5ffd\u7565\u5927\u5c0f\u5199\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>\u4f7f\u7528 javascript \u6b63\u5219\u8868\u8fbe\u5f0f\u5ffd\u7565\u5927\u5c0f\u5199\u7684\u65b9\u6cd5\uff1a\u5728\u6b63\u5219\u8868\u8fbe\u5f0f\u6a21\u5f0f\u540e\u6dfb\u52a0 i \u6807\u5fd7\uff0c\u4f8b\u5982\uff1a\/pattern\/ii \u6807\u5fd7\u8868\u793a ignorecase\uff08\u5ffd\u7565\u5927\u5c0f\u5199\uff09\uff0c\u4f7f\u6b63\u5219\u8868\u8fbe\u5f0f\u5bf9\u5927\u5c0f\u5199\u4e0d\u654f\u611f\u4f8b\u5982\uff0c\/js\/i \u53ef\u4ee5\u5339\u914d &#8220;js&#8221; \u6216 &#8220;js&#8221; \u5982\u4f55\u4f7f\u7528 JavaScript \u6b63\u5219\u8868\u8fbe\u5f0f\u5ffd\u7565\u5927\u5c0f\u5199 \u5728 JavaScript \u4e2d\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528 i \u6807\u5fd7\u6765\u5ffd\u7565\u5b57\u7b26\u4e32\u5339\u914d\u4e2d\u7684\u5927\u5c0f\u5199\u3002 \u8bed\u6cd5\uff1a \/pattern\/i \u767b\u5f55\u540e\u590d\u5236 \u5176\u4e2d\uff1a pattern\uff1a\u8981\u5339\u914d\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u6a21\u5f0f\u3002 i\uff1a\u8868\u793a ignoreCase\uff08\u5ffd\u7565\u5927\u5c0f\u5199\uff09\u6807\u5fd7\u3002 \u793a\u4f8b\uff1a \u5339\u914d\u5305\u542b &#8220;JS&#8221; \u6216 &#8220;Js&#8221; \u7684\u5b57\u7b26\u4e32\uff1a let regex = \/js\/i; &#8220;JavaScript&#8221;.match(regex); \/\/ [&#8220;JavaScript&#8221;] &#8220;Js&#8221;.match(regex); \/\/ [&#8220;Js&#8221;] \u767b\u5f55\u540e\u590d\u5236 \u4f7f\u7528 i \u6807\u5fd7\u53ef\u4ee5\u4f7f\u6b63\u5219\u8868\u8fbe\u5f0f\u5bf9\u5927\u5c0f\u5199\u4e0d\u654f\u611f\uff0c\u4ece\u800c\u63d0\u9ad8\u5339\u914d\u7684\u7075\u6d3b\u6027\u3002 \u5176\u4ed6\u6ce8\u610f\u4e8b\u9879\uff1a \u5982\u679c\u6b63\u5219\u8868\u8fbe\u5f0f\u4e2d\u5df2\u7ecf\u4f7f\u7528\u4e86\u5176\u4ed6\u6807\u5fd7\uff08\u4f8b\u5982 g \u6216 m\uff09\uff0c\u5219\u9700\u8981\u5c06 i \u6807\u5fd7\u653e\u5728\u672b\u5c3e\u3002 i \u6807\u5fd7\u53ea\u5f71\u54cd\u5927\u5c0f\u5199\u5339\u914d\u3002\u5b83\u4e0d\u4f1a\u5f71\u54cd\u5176\u4ed6\u6b63\u5219\u8868\u8fbe\u5f0f\u529f\u80fd\uff0c\u4f8b\u5982\u5143\u5b57\u7b26\u6216\u91cf\u8bcd\u3002 [&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-3380","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/3380","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=3380"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/3380\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=3380"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=3380"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=3380"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}