(the "r" in the beginning is making sure that the string is being treated as a "raw string")r"\Bain" r"ain\B"Try it » Try it » \dReturns a match where the string contains digits (numbers from 0-9)"\d"Try i
http://www.w3schools.com/js/js_obj_regexp.asp 相关讨论 最高级别的域可以有4个以上的字母:data.iana.org/tld/tlds-alpha-by-domain.txt,域".academy"或".afamilycompany"不符合您的条件。 可以向字符串对象添加函数 1 2 3 4 5 6 7 8
Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, XML and more.
Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, XML and more.
Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, XML and more.