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Course Elementary 27700

Course Introduction：Regular expressions, also known as regular expressions. (English: Regular Expression, often abbreviated as regex, regexp or RE in code), a concept in computer science. Regular tables are usually used to retrieve and replace text that matches a certain pattern (rule).

Quick introduction to regular expressions

Course Elementary 36151

Course Introduction：Regular expressions are used in almost all programming languages. It is an art of query. It uses short syntax to achieve powerful search functions. The content of this course is a quick introduction to PHP regular expressions.

JavaScript regular expression basics and practice

Course Intermediate 5344

Course Introduction：In any programming language, regular expressions are an important piece of knowledge. They provide an efficient string matching and capturing mechanism, which can greatly simplify program design.

Boolean Educational Regular Expression Video Tutorial

Course Elementary 14198

Course Introduction：By using regular expressions to represent text search parameters, some dynamically changing string matches, such as changing time, can be cleverly completed. Therefore, we have collected the "Boolean Education Regular Expression Video Tutorial", hoping to help everyone better understand regular expressions.

Self-study IT network Linux load balancing video tutorial

Course Intermediate 11327

Course Introduction："Self-study IT Network Linux Load Balancing Video Tutorial" mainly implements Linux load balancing by performing script operations on web, lvs and Linux under nagin.

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Javascript Regular Expressions: How to keep only matching groups for an arbitrary regular expression?

Is there a way in the JS regex API to rewrite the input so that only matching groups are kept (in order), but it works with arbitrary regexes (including regexes without capturing groups)? For example for the regular expression /abc([D-F]+)gh([I-K]+)/ and input abcFEEDghKIKI, I want to output "FEEDKIKI" because these are the captured parts. However, the input regex can also be /([a-zA-Z]+)/ and for the same input it will just return the original text.

2024-01-16 22:01:08

Differences in regular expression behavior

I'm trying to build a regex to match fields that should contain 9 digits I'm using the following regex /^\d{9,9}$/ Now, the problem is when doing /^\d{9, 9}$/.test("123456789")//returnstrue However, when I try to use the same regex (passed in myRegex below) using Yup's matches 'myField':yup.string().nullable ().required('F

2024-04-01 13:33:29

javascript - regular expression Q&A

{Code...} Please help me explain the above regular expression; it can match the name/value pairs in the query string, but I really don’t understand it. What kind of matching rule is this? ? For example, &name=bob&age=10, it can match name=bob and age=10

2017-06-28 09:27:59

javascript - Regular expression matching, replacing the content in html tags

Regular expression matching, replacing the content in the html tag, excluding the content of the html tag itself; for example: var str="<div class='article'><div class='article-item'>article-item&lt ;/div></div>"; Matching keywords: artic

2017-06-30 09:59:42

Pattern matching regular expression for non-consecutive repeating sequences

I have a long meaningless string where every character is either a number [0-9] or a lowercase letter [a-z] like this "0z8b816ne139z1b948bjk50f9498t139gjj90t7tb3509w6h0r7tbp" I want a regular expression that can match occurrences in the string For more than one non-consecutive pattern, I want the output to be as follows. The bold part is the matching part "0z8b816ne139z1b948bjk50f9498t139

2023-09-16 20:48:28

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How to Match Spaces in PHP Regular Expressions?

Course Introduction：Matching Spaces in PHP Regular ExpressionsWhen defining regular expressions in PHP, it's often necessary to match spaces between words. However,...

2024-10-26 comment 0 801

How to do regular expression matching and processing using PHP

Course Introduction：How to Use PHP for Regular Expression Matching and Processing Regular expressions are a powerful text matching tool commonly used in computer programming. In PHP, we can use built-in regular expression functions and operators to match and process regular expressions. This article will explain how to use regular expressions for text matching and processing in PHP, and provide some practical code examples. Basic regular expression matching First, let's take a look at how to perform simple regular expression matching. PHP's regular expression functions include preg

2023-08-03 comment 0 1288

What Does the '[^][]' Regex Expression Match?

Course Introduction：What Does the "[^][]" Regex Mean?In the regex [(?:[^][]|(?R))*], the "[^][]" expression is a character class that matches any character except "["...

2024-11-07 comment 0 1054

How do I Match Whitespace Characters in PHP Regular Expressions?

Course Introduction：Matching Whitespace in Regular Expressions for PHPMatching a space character in a PHP regular expression is a common requirement when validating...

2024-10-27 comment 0 827

php正则表达式匹配中文

Course Introduction：php正则表达式匹配中文。在php中要利用正则来匹配中文汉字的话我们需要了解字符串编码然后还有汉字的内码这样才可以方便快速的实现精确的匹配中文汉字出来，

2016-06-13 comment 0 1074

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