Regular expression learning artifact!

Recommend an excellent regular expression online visualization tool

I believe many friends first heard regular expressions , All feel that this is a tall noun .

Actually , Simply speaking , Regular expressions are used to match text .

In regular expressions “ just ” Refers to frequent customers , That is, often 、 General meaning ; and “ be ” It means regular , That's the rules . The combination is , General purpose 、 The syntax rules of the agreed format to match the expression of the text , Commonly used for text detection 、 Find and replace .

For example, judge whether the mobile phone number entered by the user is legal , You can use this regular expression ：

Even many friends who are familiar with regular expression syntax , See such a long string of expressions , You will also feel hard ; Not to mention people who haven't learned regular expression grammar , I must be confused when I see here ！

Fortunately, there is the following regular expression artifact .

RegExr, A learning 、 An online visualization tool for creating and testing regular expressions . Through online practice , It will soon help you learn the basic syntax of regular expressions , Quick start ！

RegExr

You can RegExr Enter any text in , Then whenever you change the regular expression , You can immediately see the matching result of the text string .

Below the website , There are also regular expression gadgets . For example, disassemble complex regular expressions , And support to view each syntax explanation of the entered regular expression .

Click on the colored square above , You can see a more detailed regular expression syntax tutorial .

RegExr It provides a lot of practical functions , such as ：

1. Support JavaScript and PHP/PCRE Regular expression of .
2. Update results in real time as you type
3. Tumble a match or expression of detail
4. Use the test suite to validate the pattern
5. Save and share expressions with others
6. Tools can be used to explore results
7. Have complete reference help and examples
8. Use... In the editor cmd-Z/Y Undo and Redo

Test expression

So many functions , Make it not only a learning website , It is also a powerful regular expression tool .

Although it's an English website , But there are no complicated words , We strongly recommend that you try ！

Project address ：https://www.code-nav.cn/rd/?rid=79550af2601114e9012110711798772b

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