RegExr 是一个集学习、构建和测试正则表达式(Regular Expressions / RegEx / RegExp)于一身的在线工具。 支持JavaScript&PHP/PCRE正则表达式。 匹配结果即时显示。 在匹配结果或表达式上滚动滚轮以见详情。 使用测试验证表达式。 保存并与其他人分享正则表达式。
EdittheExpression&Texttoseematches.Rollovermatchesortheexpressionfordetails.PCRE&JavaScriptflavorsofRegExaresupported.ValidateyourexpressionwithTestsmode. ThesidebarincludesaCheatsheet,fullReference,andHelp.YoucanalsoSave&SharewiththeCommunityandviewpatternsyoucreateorfavoriteinMyPatterns. ...
My Patterns Cheatsheet RegEx Reference Community Patterns Help RegExr is an online tool to learn, build, & test Regular Expressions (RegEx / RegExp). Supports JavaScript & PHP/PCRE RegEx. Results update in real-time as you type. Roll over a match or expression for details. Validate patterns...
Myregextester.com is the premier online regular expressions tester that allows visitors to construct, test, and optimize regular expressions.
console.log( string.match(regex) );// ["abab", "ab", "ababab"] 1.2 分支结构 而在多选分支结构(p1|p2)中,此处括号的作用也是不言而喻的,提供了子表达式的所有可能。 比如,要匹配如下的字符串: 1 2 I love JavaScript I love Regular Expression ...
regularexpressionlaoyaobyebye 不匹配: wrong! 匹配一个开标签,可以使用正则<[^>]+>, 匹配一个闭标签,可以使用<\/[^>]+>, 但是要求匹配成对标签,那就需要使用反向引用,如: varregex=/<([^>]+)>[\d\D]*<\/\1>/;varstring1="regular expression";varstring2="laoyao bye bye";varstring3="wrong!
[java]Regular Expression Testor import java.awt.Dimension; import java.awt.GridBagConstraints; import java.awt.GridBagLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.util.Vector; import java.util.regex.Matcher;...
let n = "Welcome to my page about regular expression page!".search(/page/i); console.log(n); // 14 1. 2. 2、replace()方法:将接收字符串作为参数 Welcome to my page about regular expression page 点我 var aBtn = document.getElementById("btn"); let oDemo...
a{3,} Between 3 and 6 of a a{3,6} Start of string ^ End of string $ A word boundary \b Non-word boundary \B Regular Expression No Match / insert your regular expression here / gm Test String insert your test string here 1:1...
The command line tool can generate example strings matching a given regex. it takes a regex using the POSIX extended regular expression syntax (orEREfor short). For example, here is a set of samples that are matched by the regex(1(01*0)*1|0)*on the alphabet composed of0and1: ...