常用的匹配正则表达式和实例（国外英文资料）.docVIP

常用的匹配正则表达式和实例（国外英文资料） Matching double-byte characters (including Chinese characters) : [^ x00 - XFF] Note: the length of the string can be used (a double-byte character length 2, ASCII character 1) Match the blank row regular expression: ns * r Note: it can be used to delete blank lines Regular expressions that match the HTML markup: (S *?) [^ ] * . *? | ...? / Note: the online version is too bad, and the above is just a match, and theres nothing you can do about the complex nested tags Regular expression matching fore and aft white space characters: ^ s * * | s $ Note: a useful expression can be used to remove whitespace characters (including whitespace, tabs, changeholders, and so on) that line the first line of the line Regular expressions match the Email address: w + ([-+] w +) * Note: the form validation is practical Regular expression matching URL: [a zA - z] + : / / / ^ s * Note: the online version has limited functionality, which can meet the requirements Matching account whether legitimate (letter, allow 5-16 bytes, allow alphanumeric underlined) : ^ [a zA - Z] [a zA - Z0-9 _] {4, 15} $ Note: the form validation is practical Match domestic phone Numbers: d {3}-d {8} {4}-d {7} Note: the matching form is 0511-4405222 or 021Match tencents QQ number: [1-9] [0-9] {4} Comment: tencent QQ number starts from 10000 Match the Chinese postal code: [1-9] d {5} (?! D) Note: China post codes for 6 digits Matching id: d {15} | d {18} Note: Chinas id card is 15 or 18 Match the IP address: d +.d +.d + Note: it is useful to extract IP addresses Matching specific Numbers: ^ (1-9] d * $/ / matching positive integer ^ - [1-9] d * $/ / matching negative integer ^ -? [1-9] d * $/ / match integers ^ (1-9] d * | 0 $/ / match non-negative integer (positive integer + 0) ^ - [1-9] d * | 0 $/ / match the positive integer (negative integers + 0) ^ (1-9] d *. * d | 0. D * (1-9] d * $/ / match is floating point number ^ - (1-9] [d *. | 0. D * * d * (1-9] d) $/ / match negative