{"id":1182,"date":"2023-07-17T15:17:06","date_gmt":"2023-07-17T07:17:06","guid":{"rendered":"https:\/\/log.tanxiaodian.com\/?p=1182"},"modified":"2023-07-17T15:17:06","modified_gmt":"2023-07-17T07:17:06","slug":"javascript%e6%ad%a3%e5%88%99","status":"publish","type":"post","link":"https:\/\/log.tanxiaodian.com\/?p=1182","title":{"rendered":"Javascript\u6b63\u5219"},"content":{"rendered":"\n<h2>javascript\u4e2d\u6b63\u5219\u8868\u8fbe\u5f0f\/ig\u8868\u793a\u4ec0\u4e48\u610f\u601d<\/h2>\n\n\n\n<p>\u6b63\u5219\u8868\u8fbe\u5f0f\u4e2d\/i,\/g,\/ig,\/gi,\/m\u7684\u533a\u522b\u548c\u542b\u4e49<\/p>\n\n\n\n<p>\/i (\u5ffd\u7565\u5927\u5c0f\u5199)<br>\/g (\u5168\u6587\u67e5\u627e\u51fa\u73b0\u7684\u6240\u6709\u5339\u914d\u5b57\u7b26)<br>\/m (\u591a\u884c\u67e5\u627e)<br>\/gi(\u5168\u6587\u67e5\u627e\u3001\u5ffd\u7565\u5927\u5c0f\u5199)<br>\/ig(\u5168\u6587\u67e5\u627e\u3001\u5ffd\u7565\u5927\u5c0f\u5199)<\/p>\n\n\n\n<p>\u4fee\u9970\u7b26<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><th>\u4fee\u9970\u7b26<\/th><th>\u63cf\u8ff0<\/th><\/tr><tr><td>i<\/td><td>\u6267\u884c\u5bf9\u5927\u5c0f\u5199\u4e0d\u654f\u611f\u7684\u5339\u914d\u3002<\/td><\/tr><tr><td>g<\/td><td>\u6267\u884c\u5168\u5c40\u5339\u914d\uff08\u67e5\u627e\u6240\u6709\u5339\u914d\u800c\u975e\u5728\u627e\u5230\u7b2c\u4e00\u4e2a\u5339\u914d\u540e\u505c\u6b62\uff09\u3002<\/td><\/tr><tr><td>m<\/td><td>\u6267\u884c\u591a\u884c\u5339\u914d\u3002<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u65b9\u62ec\u53f7<\/p>\n\n\n\n<p>\u65b9\u62ec\u53f7\u7528\u4e8e\u67e5\u627e\u67d0\u4e2a\u8303\u56f4\u5185\u7684\u5b57\u7b26\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><th>\u8868\u8fbe\u5f0f<\/th><th>\u63cf\u8ff0<\/th><\/tr><tr><td>[abc]<\/td><td>\u67e5\u627e\u65b9\u62ec\u53f7\u4e4b\u95f4\u7684\u4efb\u4f55\u5b57\u7b26\u3002<\/td><\/tr><tr><td>[^abc]<\/td><td>\u67e5\u627e\u4efb\u4f55\u4e0d\u5728\u65b9\u62ec\u53f7\u4e4b\u95f4\u7684\u5b57\u7b26\u3002<\/td><\/tr><tr><td>[0-9]<\/td><td>\u67e5\u627e\u4efb\u4f55\u4ece 0 \u81f3 9 \u7684\u6570\u5b57\u3002<\/td><\/tr><tr><td>[a-z]<\/td><td>\u67e5\u627e\u4efb\u4f55\u4ece\u5c0f\u5199 a \u5230\u5c0f\u5199 z \u7684\u5b57\u7b26\u3002<\/td><\/tr><tr><td>[A-Z]<\/td><td>\u67e5\u627e\u4efb\u4f55\u4ece\u5927\u5199 A \u5230\u5927\u5199 Z \u7684\u5b57\u7b26\u3002<\/td><\/tr><tr><td>[A-z]<\/td><td>\u67e5\u627e\u4efb\u4f55\u4ece\u5927\u5199 A \u5230\u5c0f\u5199 z \u7684\u5b57\u7b26\u3002<\/td><\/tr><tr><td>[adgk]<\/td><td>\u67e5\u627e\u7ed9\u5b9a\u96c6\u5408\u5185\u7684\u4efb\u4f55\u5b57\u7b26\u3002<\/td><\/tr><tr><td>[^adgk]<\/td><td>\u67e5\u627e\u7ed9\u5b9a\u96c6\u5408\u5916\u7684\u4efb\u4f55\u5b57\u7b26\u3002<\/td><\/tr><tr><td>(red|blue|green)<\/td><td>\u67e5\u627e\u4efb\u4f55\u6307\u5b9a\u7684\u9009\u9879\u3002<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u5143\u5b57\u7b26<\/p>\n\n\n\n<p>\u5143\u5b57\u7b26\uff08Metacharacter\uff09\u662f\u62e5\u6709\u7279\u6b8a\u542b\u4e49\u7684\u5b57\u7b26\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><th>\u5143\u5b57\u7b26<\/th><th>\u63cf\u8ff0<\/th><\/tr><tr><td>.<\/td><td>\u67e5\u627e\u5355\u4e2a\u5b57\u7b26\uff0c\u9664\u4e86\u6362\u884c\u548c\u884c\u7ed3\u675f\u7b26\u3002<\/td><\/tr><tr><td>w<\/td><td>\u67e5\u627e\u5355\u8bcd\u5b57\u7b26\u3002<\/td><\/tr><tr><td>W<\/td><td>\u67e5\u627e\u975e\u5355\u8bcd\u5b57\u7b26\u3002<\/td><\/tr><tr><td>d<\/td><td>\u67e5\u627e\u6570\u5b57\u3002<\/td><\/tr><tr><td>D<\/td><td>\u67e5\u627e\u975e\u6570\u5b57\u5b57\u7b26\u3002<\/td><\/tr><tr><td>s<\/td><td>\u67e5\u627e\u7a7a\u767d\u5b57\u7b26\u3002<\/td><\/tr><tr><td>S<\/td><td>\u67e5\u627e\u975e\u7a7a\u767d\u5b57\u7b26\u3002<\/td><\/tr><tr><td>b<\/td><td>\u67e5\u627e\u4f4d\u4e8e\u5355\u8bcd\u7684\u5f00\u5934\u6216\u7ed3\u5c3e\u7684\u5339\u914d\u3002<\/td><\/tr><tr><td>B<\/td><td>\u67e5\u627e\u4e0d\u5904\u5728\u5355\u8bcd\u7684\u5f00\u5934\u6216\u7ed3\u5c3e\u7684\u5339\u914d\u3002<\/td><\/tr><tr><td><\/td><td>\u67e5\u627e NUL \u5b57\u7b26\u3002<\/td><\/tr><tr><td>n<\/td><td>\u67e5\u627e\u6362\u884c\u7b26\u3002<\/td><\/tr><tr><td>f<\/td><td>\u67e5\u627e\u6362\u9875\u7b26\u3002<\/td><\/tr><tr><td>r<\/td><td>\u67e5\u627e\u56de\u8f66\u7b26\u3002<\/td><\/tr><tr><td>t<\/td><td>\u67e5\u627e\u5236\u8868\u7b26\u3002<\/td><\/tr><tr><td>v<\/td><td>\u67e5\u627e\u5782\u76f4\u5236\u8868\u7b26\u3002<\/td><\/tr><tr><td>xxx<\/td><td>\u67e5\u627e\u4ee5\u516b\u8fdb\u5236\u6570 xxx \u89c4\u5b9a\u7684\u5b57\u7b26\u3002<\/td><\/tr><tr><td>xdd<\/td><td>\u67e5\u627e\u4ee5\u5341\u516d\u8fdb\u5236\u6570 dd \u89c4\u5b9a\u7684\u5b57\u7b26\u3002<\/td><\/tr><tr><td>uxxxx<\/td><td>\u67e5\u627e\u4ee5\u5341\u516d\u8fdb\u5236\u6570 xxxx \u89c4\u5b9a\u7684 Unicode \u5b57\u7b26\u3002<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u91cf\u8bcd<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><th>\u91cf\u8bcd<\/th><th>\u63cf\u8ff0<\/th><\/tr><tr><td>n+<\/td><td>\u5339\u914d\u4efb\u4f55\u5305\u542b\u81f3\u5c11\u4e00\u4e2a n \u7684\u5b57\u7b26\u4e32\u3002<\/td><\/tr><tr><td>n*<\/td><td>\u5339\u914d\u4efb\u4f55\u5305\u542b\u96f6\u4e2a\u6216\u591a\u4e2a n \u7684\u5b57\u7b26\u4e32\u3002<\/td><\/tr><tr><td>n?<\/td><td>\u5339\u914d\u4efb\u4f55\u5305\u542b\u96f6\u4e2a\u6216\u4e00\u4e2a n \u7684\u5b57\u7b26\u4e32\u3002<\/td><\/tr><tr><td>n{X}<\/td><td>\u5339\u914d\u5305\u542b X \u4e2a n \u7684\u5e8f\u5217\u7684\u5b57\u7b26\u4e32\u3002<\/td><\/tr><tr><td>n{X,Y}<\/td><td>\u5339\u914d\u5305\u542b X \u6216 Y \u4e2a n \u7684\u5e8f\u5217\u7684\u5b57\u7b26\u4e32\u3002<\/td><\/tr><tr><td>n{X,}<\/td><td>\u5339\u914d\u5305\u542b\u81f3\u5c11 X \u4e2a n \u7684\u5e8f\u5217\u7684\u5b57\u7b26\u4e32\u3002<\/td><\/tr><tr><td>n$<\/td><td>\u5339\u914d\u4efb\u4f55\u7ed3\u5c3e\u4e3a n \u7684\u5b57\u7b26\u4e32\u3002<\/td><\/tr><tr><td>^n<\/td><td>\u5339\u914d\u4efb\u4f55\u5f00\u5934\u4e3a n \u7684\u5b57\u7b26\u4e32\u3002<\/td><\/tr><tr><td>?=n<\/td><td>\u5339\u914d\u4efb\u4f55\u5176\u540e\u7d27\u63a5\u6307\u5b9a\u5b57\u7b26\u4e32 n \u7684\u5b57\u7b26\u4e32\u3002<\/td><\/tr><tr><td>?!n<\/td><td>\u5339\u914d\u4efb\u4f55\u5176\u540e\u6ca1\u6709\u7d27\u63a5\u6307\u5b9a\u5b57\u7b26\u4e32 n \u7684\u5b57\u7b26\u4e32\u3002<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>RegExp \u5bf9\u8c61\u5c5e\u6027<\/p>\n\n\n\n<p>FF: Firefox, IE: Internet Explorer<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><th>\u5c5e\u6027<\/th><th>\u63cf\u8ff0<\/th><th>FF<\/th><th>IE<\/th><\/tr><tr><td>global<\/td><td>RegExp \u5bf9\u8c61\u662f\u5426\u5177\u6709\u6807\u5fd7 g\u3002<\/td><td>1<\/td><td>4<\/td><\/tr><tr><td>ignoreCase<\/td><td>RegExp \u5bf9\u8c61\u662f\u5426\u5177\u6709\u6807\u5fd7 i\u3002<\/td><td>1<\/td><td>4<\/td><\/tr><tr><td>lastIndex<\/td><td>\u4e00\u4e2a\u6574\u6570\uff0c\u6807\u793a\u5f00\u59cb\u4e0b\u4e00\u6b21\u5339\u914d\u7684\u5b57\u7b26\u4f4d\u7f6e\u3002<\/td><td>1<\/td><td>4<\/td><\/tr><tr><td>multiline<\/td><td>RegExp \u5bf9\u8c61\u662f\u5426\u5177\u6709\u6807\u5fd7 m\u3002<\/td><td>1<\/td><td>4<\/td><\/tr><tr><td>source<\/td><td>\u6b63\u5219\u8868\u8fbe\u5f0f\u7684\u6e90\u6587\u672c\u3002<\/td><td>1<\/td><td>4<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>RegExp \u5bf9\u8c61\u65b9\u6cd5<\/p>\n\n\n\n<p>FF: Firefox, IE: Internet Explorer<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><th>\u65b9\u6cd5<\/th><th>\u63cf\u8ff0<\/th><th>FF<\/th><th>IE<\/th><\/tr><tr><td>compile<\/td><td>\u7f16\u8bd1\u6b63\u5219\u8868\u8fbe\u5f0f\u3002<\/td><td>1<\/td><td>4<\/td><\/tr><tr><td>exec<\/td><td>\u68c0\u7d22\u5b57\u7b26\u4e32\u4e2d\u6307\u5b9a\u7684\u503c\u3002\u8fd4\u56de\u627e\u5230\u7684\u503c\uff0c\u5e76\u786e\u5b9a\u5176\u4f4d\u7f6e\u3002<\/td><td>1<\/td><td>4<\/td><\/tr><tr><td>test<\/td><td>\u68c0\u7d22\u5b57\u7b26\u4e32\u4e2d\u6307\u5b9a\u7684\u503c\u3002\u8fd4\u56de true \u6216 false\u3002<\/td><td>1<\/td><td>4<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u652f\u6301\u6b63\u5219\u8868\u8fbe\u5f0f\u7684 String \u5bf9\u8c61\u7684\u65b9\u6cd5<\/p>\n\n\n\n<p>FF: Firefox, IE: Internet Explorer<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><th>\u65b9\u6cd5<\/th><th>\u63cf\u8ff0<\/th><th>FF<\/th><th>IE<\/th><\/tr><tr><td>search<\/td><td>\u68c0\u7d22\u4e0e\u6b63\u5219\u8868\u8fbe\u5f0f\u76f8\u5339\u914d\u7684\u503c\u3002<\/td><td>1<\/td><td>4<\/td><\/tr><tr><td>match<\/td><td>\u627e\u5230\u4e00\u4e2a\u6216\u591a\u4e2a\u6b63\u5219\u8868\u8fbe\u5f0f\u7684\u5339\u914d\u3002<\/td><td>1<\/td><td>4<\/td><\/tr><tr><td>replace<\/td><td>\u66ff\u6362\u4e0e\u6b63\u5219\u8868\u8fbe\u5f0f\u5339\u914d\u7684\u5b50\u4e32\u3002<\/td><td>1<\/td><td>4<\/td><\/tr><tr><td>split<\/td><td>\u628a\u5b57\u7b26\u4e32\u5206\u5272\u4e3a\u5b57\u7b26\u4e32\u6570\u7ec4\u3002<\/td><\/tr><\/tbody><\/table><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>javascript\u4e2d\u6b63\u5219\u8868\u8fbe\u5f0f\/ig\u8868\u793a\u4ec0\u4e48\u610f\u601d&#8230;<\/p>\n<div class=\"more-link-wrapper\"><a class=\"more-link\" href=\"https:\/\/log.tanxiaodian.com\/?p=1182\">Continue reading<span class=\"screen-reader-text\">Javascript\u6b63\u5219<\/span><\/a><\/div>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[7],"tags":[],"_links":{"self":[{"href":"https:\/\/log.tanxiaodian.com\/index.php?rest_route=\/wp\/v2\/posts\/1182"}],"collection":[{"href":"https:\/\/log.tanxiaodian.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/log.tanxiaodian.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/log.tanxiaodian.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/log.tanxiaodian.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1182"}],"version-history":[{"count":1,"href":"https:\/\/log.tanxiaodian.com\/index.php?rest_route=\/wp\/v2\/posts\/1182\/revisions"}],"predecessor-version":[{"id":1183,"href":"https:\/\/log.tanxiaodian.com\/index.php?rest_route=\/wp\/v2\/posts\/1182\/revisions\/1183"}],"wp:attachment":[{"href":"https:\/\/log.tanxiaodian.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1182"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/log.tanxiaodian.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1182"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/log.tanxiaodian.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1182"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}